On August 16, 2019, Yan, Dingyuan; Jiang, Heming; Sun, Wenxue; Wei, Wei; Zhao, Jing; Zhang, Xinhao; Wu, Yun-Dong published an article.HPLC of Formula: 685-91-6 The title of the article was Synthesis of Benzofurans and Benzoxazoles through a [3,3]-Sigmatropic Rearrangement: O-NHAc as a Multitasking Functional Group. And the article contained the following:
The synthesis of heterocycles relies heavily on diverse sigmatropic rearrangements triggered by the cleavage of X-Y (X, Y = C, O, N, S, I) bonds. However, a unified rearrangement approach for constructing heterocyclic libraries is highly desirable. Encouraged by computational anal. of [3,3]-sigmatropic rearrangements, we can now rapidly synthesize oxa-heterocycles by treating N-phenoxyacetamides (Ph-ONHAc) with compounds containing an sp-hybridized carbon. The generality of the process is illustrated by the late-stage diversification of natural products, including estrone and an approved drug. A combination of exptl. and computational studies revealed that the reactions proceed through a facile Claisen-like [3,3]-sigmatropic rearrangement/annulation process. The experimental process involved the reaction of N,N-Diethylacetamide(cas: 685-91-6).HPLC of Formula: 685-91-6
The Article related to synthesis benzofuran benzoxazole, sigmatropic rearrangement mol modeling, Heterocyclic Compounds (More Than One Hetero Atom): Oxazoles, Isoxazoles and other aspects.HPLC of Formula: 685-91-6
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics