Reference of Ethyl oxalyl monochlorideIn 2022 ,《[3+2] Cycloaddition of Nitrile Imines with 3-Benzylidene Succinimides: A Facile Access to Functionalized Spiropyrazolines》 was published in Asian Journal of Organic Chemistry. The article was written by Yuan, Cheng; Ning, Xiaojun; Gao, Tao; Zeng, Zhigang; Lee, Kevin; Xing, Yalan; Sun, Shaofa; Wang, Gangqiang. The article contains the following contents:
A wide range of substituted spiro-pyrazoline derivatives I [R1 = heptyl, 4-methoxyphenyl, naphthalen-2-yl, etc.; R2 = cyclopropyl, 4-fluorophenyl, furan-2-yl, thiophen-2-yl, etc.; R3 = Ph, 3-methylphenyl, 4-cyanophenyl, etc.] containing the pyrrolidinone core have been prepared by alkalic treatment of 3-benzylidene succinimides II and nitrile imines. All reactions proceeded under mild conditions and the products I were isolated by column chromatog. in good yields with high diastereoselectivity. Furthermore, this method featured several advantages such as good functional group tolerance and simple scalability. The experimental part of the paper was very detailed, including the reaction process of Ethyl oxalyl monochloride(cas: 4755-77-5Reference of Ethyl oxalyl monochloride)
Ethyl oxalyl monochloride(cas: 4755-77-5) belongs to acyl chlorides. Lacking the ability to form hydrogen bonds, acyl chlorides have lower boiling and melting points than similar carboxylic acids. For example, acetic acid boils at 118 °C, whereas acetyl chloride boils at 51 °C. Like most carbonyl compounds, infrared spectroscopy reveals a band near 1750 cm−1.Reference of Ethyl oxalyl monochloride
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