Category: 5205-11-8

Yasui, Kengo published the artcileUse of π-allylpalladium as a nucleophile via an alkyl-allyl exchange reaction with alkylzinc, Category: esters-buliding-blocks, the publication is Tetrahedron Letters (1993), 34(47), 7619-22, database is CAplus.

Allylation of carbonyl compounds (aldehydes, ketones, esters, lactones, acid anhydrides) proceeds smoothly at room temperature by the reaction of a carbonyl compound, an allylic benzoate or allylic Ph ether, diethylzinc, and a catalytic amount of Pd(0)-complex in THF under N₂. E.g., reaction of 1.0 mmol E-PhCH:CHCHO with 1.2 mmol allyl benzoate in THF containing 0.05 mmol Pd(PPh₃)₄ and 2.4 mmol Et₂Zn in hexane gave 97% E-PhCH:CHCH(OH)CH₂CH:CH₂.

Tetrahedron Letters published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C7H11N, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Du, Yiming published the artcileTransition-Metal-Free, Intermolecular Azidoheteroarylation of Alkenes: Efficient Access to β-Azidoalkylated Quinoxalinones and Preliminary Antifungal Evaluation Against Magnaporthe grisea, Product Details of C12H14O2, the publication is Synthesis (2020), 52(16), 2395-2409, database is CAplus.

An efficient, PhI(OAc)₂-mediated, radical azidoheteroarylation of alkenes under transition-metal-free conditions is reported by employing TMSN₃ and quinoxalin-2(1 H)-ones as coupling partners. This domino reaction allows an efficient synthesis of valuable orangoazides containing quinoxalin-2(1 H)-one derivatives and could be extended to phosphinyl-alkylated quinoxalin-2(1 H)-one in a single step in moderate to excellent yields under mild conditions, as demonstrated by the preliminary antifungal evaluation against Magnaporthe grisea for the first time. Mechanistic studies revealed that this transformation undergoes a cascade addition pathway controlled by a polar radical. Thus, e.g., 1-methylquinoxalin-2(1H)-one + 1-hexene + TMSN₃ â†?I (96%) in MeCN in presence of Li₂CO₃ as base and PhI(OAc)₂ as oxidant.

Synthesis published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, Product Details of C12H14O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Jimenez, Tania published the artcileRadical Reduction of Epoxides Using a Titanocene(III)/Water System: Synthesis of β-Deuterated Alcohols and Their Use as Internal Standards in Food Analysis, COA of Formula: C12H14O2, the publication is European Journal of Organic Chemistry (2010), 4288-4295, S4288/1-S4288/53, database is CAplus.

Described is a comprehensive study into the Cp₂TiCl-mediated reductive epoxide ring opening using either water as a hydrogen source or deuterium oxide as a deuterium source. The remarkable chem. profile of this reaction allows access to alcs. with anti-Markovnikov regiochem. from different epoxides. The use of D₂O as a deuterium source leads to an efficient synthesis of β-deuterated alcs., including a deuterated sample of tyrosol, a bioactive compound contained in the leaves of the olive, which was successfully applied as an internal standard in food anal.

European Journal of Organic Chemistry published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, COA of Formula: C12H14O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Breslow, Ronald published the artcileSubstrate selectivity in epoxidation by metalloporphyrin and metallosalen catalysts carrying binding groups, Recommanded Product: 3-Methylbut-2-en-1-yl benzoate, the publication is Journal of the American Chemical Society (1989), 111(12), 4517-18, database is CAplus.

Iron porphyrin I has been synthesized. With 4 equiv of Cu²⁺ I catalyzes the epoxidation of cis-2-butene-1,4-diol dinicotinate (II) with a 40-fold increase in reactivity compared with a non-complexing substrate, as determined in direct competition experiments This reaction was essentially stereospecific in forming the cis epoxide, whereas without the added Cu²⁺ ca. 8% of the product epoxide was trans. By contrast, the mononicotinate monobenzoate (III) of the diol shows only a 2-fold selectivity increase when Cu²⁺ is added. Moreover, the cis-2-butene-1,4-diol diisonicotinate shows no increased selectivity when Cu²⁺ is added. Thus II must be doubly bound to the catalyst and stretched across the catalytic iron center, promoting its reaction and conserving stereochem. A singly binding substrate or one (the isonicotinate) with the wrong geometry cannot use this mechanism. A salen-Mn^III epoxidation catalyst has been synthesized carrying bipyridyl appendages that can also bind Cu². This gives a 43-fold increase in reactivity for the II, compared with an analogous catalyst without the Cu²⁺ binding sites. In this case the increased reactivity was comparable for III. Furthermore, with this catalyst under all circumstances the cis butene substrate forms ∼7% of trans epoxide. Thus in this more flexible salen system a single binding interaction is chiefly responsible for the increased reactivity of II in the presence of Cu²⁺, and the second binding group contributes little. The porphyrin catalyst imitates the multipoint substrate binding across a catalytic group characteristic of cytochrome P 450 enzymes.

Journal of the American Chemical Society published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, Recommanded Product: 3-Methylbut-2-en-1-yl benzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Lefebvre, Olivier published the artcileMixed organofluorine-organosilicon chemistry. 10. Allylation and benzylation of difluoroenoxysilanes. Application to the synthesis of gem-difluoroterpene analogues, Computed Properties of 5205-11-8, the publication is Tetrahedron (1999), 55(23), 7233-7242, database is CAplus.

Acylsilane and trifluoromethyltrimethylsilane gave, under fluoride initiation, a difluoroenoxysilane which is used in situ in a Lewis acid catalyzed coupling with a prenyl ester or a benzylic bromide. The advantage of this one-pot procedure was illustrated by its use in the synthesis of gem-difluoro analogs of terpenes (dehydro-ar-curcumene and ar-turmerone).

Tetrahedron published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, Computed Properties of 5205-11-8.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Lefebvre, Olivier published the artcileAcetyltrimethylsilane, Trifluoromethyltrimethylsilane, and Prenyl Esters: A Three-Component System for the Synthesis of gem-Difluoroanalogues of Monoterpenes, SDS of cas: 5205-11-8, the publication is Journal of Organic Chemistry (2001), 66(12), 4348-4351, database is CAplus and MEDLINE.

The preparation of 3,3-difluoro-6-methylhept-5-en-2-one (I), a key intermediate for the synthesis of 4,4-difluoroterpenes, and applications in linalool and geraniol series are described. The process involves 1,1-difluoro-2-trimethylsilyoxypropene, an enol silyl ether prepared from acetyltrimethylsilane and trifluoromethyltrimethylsilane, and its reaction in situ with prenyl benzoate, under catalysis by trimethylsilyl trifluoromethanesulfonate. Optimized conditions leading to either the desired enol silyl ether or the unprecedented methyl(trifluoromethyl)trimethylsilyl carbinol have been achieved. The prenylation of the enol silyl ether gives a 9/1 mixture of regioisomers, in favor of the expected ketone I. Treatment of I with vinylmagnesium bromide leads to (±)-4,4-difluorolinalool. Reaction with the lithium enolate of Et diethylphosphonoacetate, and then LAH reduction, converts I to 4,4-difluorogeraniol, with complete stereoselectivity.

Journal of Organic Chemistry published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, SDS of cas: 5205-11-8.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Sundh, Ulla Beckman published the artcileScientific opinion on Flavouring Group Evaluation 20, Revision 4 (FGE.20Rev4): benzyl alcohols, benzaldehydes, a related acetal, benzoic acids, and related esters from chemical groups 23 and 30, Recommanded Product: 3-Methylbut-2-en-1-yl benzoate, the publication is EFSA Journal (2012), 10(12), 2994, 140 pp., database is CAplus.

The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 45 flavouring substances in the Flavouring Group Evaluation 20, Revision 4 (FGE.20Rev4), using the Procedure in Commission Regulation (EC) No 1565/2000. This revision 4 is made due to inclusion of four addnl. substances, o-, m- and p-tolualdehyde [FL no: 05.026, 05.028 and 05.029] and phenylmethyl 2-methyl-2-butenoate [FL no: 09.858]. None of the substances were considered to have genotoxic potential. The substances were evaluated through a stepwise approach (the Procedure) that integrates information on structure-activity relationships, intake from current uses, toxicol. threshold of concern, and available data on metabolism and toxicity. The Panel concluded that all the substances do not give rise to safety concerns at their levels of dietary intake, estimated on the basis of the MSDI approach. Besides the safety assessment of these flavouring substances, the specifications for the materials of commerce have also been considered. Adequate specifications including complete purity criteria and identity for the materials of commerce have been provided for all 45 candidate substances.

EFSA Journal published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C10H15NO, Recommanded Product: 3-Methylbut-2-en-1-yl benzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Anadon, Arturo published the artcileScientific opinion on Flavouring Group Evaluation 20, Revision 3(FGE.20Rev3): benzyl alcohols, benzaldehydes, a related acetal, benzoic acids, and related esters from chemical groups 23 and 30, Recommanded Product: 3-Methylbut-2-en-1-yl benzoate, the publication is EFSA Journal (2011), 9(7), 2176, 136 pp., database is CAplus.

The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider in this revision 3 of Flavouring Group Evaluation 20, the SCF Opinion on benzoic acid. Furthermore information on stereoisomeric composition for two substances [FL-no: 06.104 and 09.570] and new information to support the re-allocation of the structural class for the candidate substance piperonyl alc. [FL-no: 02.205] has been submitted. The 41 flavouring substances in Flavouring Group Evaluation 20 were evaluated using the Procedure in Commission Regulation (EC) No 1565/2000. None of the substances were considered to have genotoxic potential. The substances were evaluated through a stepwise approach (the Procedure) that integrates information on structure-activity relationships, intake from current uses, toxicol. threshold of concern, and available data on metabolism and toxicity. The Panel concluded that all the substances do not give rise to safety concerns at their levels of dietary intake, estimated on the basis of the MSDI approach.

EFSA Journal published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, Recommanded Product: 3-Methylbut-2-en-1-yl benzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Wuest, Frank R. published the artcile¹¹C-C bond formation by palladium-mediated cross-coupling of alkenylzirconocenes with [¹¹C]methyl iodide, Application of 3-Methylbut-2-en-1-yl benzoate, the publication is Journal of Labelled Compounds and Radiopharmaceuticals (2006), 49(2), 91-100, database is CAplus.

Hydrozirconation of substituted propynes followed by coupling with [¹¹C]methyl iodide was applied for preparation of methyl-group labeled alkenes. Reaction fo RCCMe with Cp₂ZrHCl with subsequent treatment with ¹¹C-Me iodide in the presence of Pd(PPh₃)₄ yielded the corresponding RCH:CMe(¹¹CH₃) (R = Ph, PhOCH₂, ^tBu, n-Pr, ^tBuMe₂SiOCH₂, HOCH₂, 4-NO₂C₆H₄OCH₂). The palladium complex Pd(PPh₃)₄ proved to be superior to Pt(PPh₃)₄ or Ni(PPh₃)₄ as transition metal complex. The scope and limitations of the novel palladium-mediated cross-coupling reaction of alkenylzirconocenes with [¹¹C]methyl iodide were tested with various internal alkynes. After heating at 60° for 6 min radiochem. yields of up to 75% (based upon [¹¹C]methyl iodide) could be achieved.

Journal of Labelled Compounds and Radiopharmaceuticals published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C9H5ClO2, Application of 3-Methylbut-2-en-1-yl benzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Anadon, Arturo published the artcileScientific opinion on Flavouring Group Evaluation 20, Revision 2 (FGE.20Rev2): benzyl alcohols, benzaldehydes, a related acetal, benzoic acids, and related esters from chemical groups 23 and 30, Safety of 3-Methylbut-2-en-1-yl benzoate, the publication is EFSA Journal (2010), 8(7), 1405, 136 pp., database is CAplus.

The Scientific Panel on Food Contact Materials, Enzymes, Flavorings and Processing Aids has been requested to evaluate 41 flavoring substances in the Flavoring Group Evaluation 20, Revision 2 (FGE.20Rev2), using the Procedure as referred to in the Commission Regulation (EC) No 1565/2000. These 41 flavoring substances belong to chem. group 23 and 30, Annex I of the Commission Regulation (EC) No 1565/2000. Generally, 39 candidate substances would present no safety concern at the levels of intake estimated on the basis of the MSDI approach. Notably, information on stereoisomerism has not been specified for two, the final evaluation of the materials of commerce cannot be performed for these two substances, pending further information.

EFSA Journal published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, Safety of 3-Methylbut-2-en-1-yl benzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics