Batch and Flow Photochemical Benzannulations Based on the Reaction of Ynamides and Diazo Ketones. Application to the Synthesis of Polycyclic Aromatic and Heteroaromatic Compounds
作者:Thomas P. Willumstad、Olesya Haze、Xiao Yin Mak、Tin Yiu Lam、Yu-Pu Wang、Rick L. Danheiser
DOI:10.1021/jo402010b
日期:2013.11.15
compounds are produced via a two-stage tandem benzannulation/cyclization strategy. The initial benzannulation step proceeds via a pericyclic cascade mechanism triggered by thermal or photochemical Wolff rearrangement of a diazo ketone. The photochemical process can be performed using a continuous flow reactor which facilitates carrying out reactions on a large scale and minimizes the time required for