Category: 20637-09-6

Catalytic asymmetric allylic alkylation in water with a recyclable amphiphilic resin-supported P,N-chelating palladium complex was written by Uozumi, Yasuhiro;Shibatomi, Kazutaka. And the article was included in Journal of the American Chemical Society in 2001.Related Products of 20637-09-6 This article mentions the following:

The PS-PEG resin-bound [(diphenylphosphino)phenyl]pyrroloimidazolones I and II (R = H, HO; Q = polystyrene resin) were prepared and formed palladium complexes with [PdCl(η³-C₃H₅)]₂. These immobilized complexes were catalysts for the asym. allylic alkylation of both cyclic and acyclic α,β-unsaturated carbonates in water with enantioselectivities up to 98% ee. Thus, reaction of the cyclohexenyl carbonate III with di-Me malonate in H₂O containing Li₂CO₃ and the complex I-[PdCl(η³-C₃H₅)]₂ gave (S)-cyclohexenylmalonate IV in 78% yield and 89% enantiomeric excess. In the experiment, the researchers used many compounds, for example, Methyl 4-(4-aminophenyl)butanoate (cas: 20637-09-6Related Products of 20637-09-6).

Methyl 4-(4-aminophenyl)butanoate (cas: 20637-09-6) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Related Products of 20637-09-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Substituent effects on the McLafferty rearrangement of methyl 4-phenylbutyrates was written by Kingston, David G. I.;Tannenbaum, Harvey P.. And the article was included in Chemical Communications (London) in 1968.Category: esters-buliding-blocks This article mentions the following:

The McLafferty rearrangement of substituted p-RC6H4(CH2)3CO2Me (I) does not obey the standard equation for mass spectrometric reactions, but rather a modified form. The intensity of the radical ion [HOC(:CH2)OMe]· shows a considerable substituent effect based on the fact that substituents alter the relative proportions of mol. ions of I capable of decomposition (with the pos.charge localized on the carbonyl group) and those not capable of decomposition(with the pos. charge delocalized in the aromatic ring). The observed substituent effects are due, therefore, to a combination of a substituent effect on the energy of the transition state leading to the ions formed and a substituent effect on the fraction of mol. ions capable of undergoing rearrangement. In the experiment, the researchers used many compounds, for example, Methyl 4-(4-aminophenyl)butanoate (cas: 20637-09-6Category: esters-buliding-blocks).

Methyl 4-(4-aminophenyl)butanoate (cas: 20637-09-6) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Substituent effects in the mass spectra of some γ- and β-substituted methyl butyrates was written by Howe, Ian;Williams, Dudley H.;Kingston, David G. I.;Tannenbaum, Harvey P.. And the article was included in Journal of the Chemical Society [Section] B: Physical Organic in 1969.Product Details of 20637-09-6 This article mentions the following:

Results are presented (relative ion abundances, I.P. and A.P. measurements) to illustrate substituent effects in the mass spectra of some γ-and β-substituted methyl butyrates. It is argued that (i) “subdecompn. energy” ions and (ii) competition in the source with fast fragmentation processes are important factors influencing parent/daughter ion ratios, which are then rationalized in terms of the variation of these two factors with substituent. In certain cases a substituent effect on the energy of activation of the transition state is also invoked. The variation in parent/daughter ratios at different energies is explained in terms of relative A.P.’s and frequency factors. Mechanisms are discussed for the elimination of MeOH from M+ and for the McLafferty rearrangement. (I. P. and A. P. = ionization and appearance potential). In the experiment, the researchers used many compounds, for example, Methyl 4-(4-aminophenyl)butanoate (cas: 20637-09-6Product Details of 20637-09-6).

Methyl 4-(4-aminophenyl)butanoate (cas: 20637-09-6) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Product Details of 20637-09-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics