Transition-Metal-Free Deaminative Vinylation of Alkylamines was written by Hu, Jiefeng;Cheng, Bo;Yang, Xianyu;Loh, Teck-Peng. And the article was included in Advanced Synthesis & Catalysis in 2019.Application of 185619-66-3 This article mentions the following:
An efficient metal-free system, that was capable of activating the C-N bonds of Katritzky pyridinium salts I [R = 3,3-difluorocyclobutyl, cyclohexyl, PhCH2CH(CO2Me), etc.] derived from diverse alkylamines for deaminative vinylation to produce various olefins RCH=CHAr [Ar = Ph, 2-thienyl, 4-FC6H4, etc.]. The key to the high reactivity was the utilization of pyridinium salt-activated alkylamines I with a base as a promoter. The transformation exhibited good functional group compatibility and included inexpensive primary amine feedstocks and amino acids. The proposed method could serve as a powerful synthetic method for late-stage modification of complex compounds Mechanistic experiments suggestes that free radical processes are involved in this system. In the experiment, the researchers used many compounds, for example, tert-Butyl (3-ethynylphenyl)carbamate (cas: 185619-66-3Application of 185619-66-3).
tert-Butyl (3-ethynylphenyl)carbamate (cas: 185619-66-3) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Application of 185619-66-3
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics