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
DANHEISER, RICK L.;BRISBOIS, RONALD G.;KOWALCZYK, JAMES J.;MILLER, RAYMON+, J. AMER. CHEM. SOC., 112,(1990) N, C. 3093-3100
作者:DANHEISER, RICK L.、BRISBOIS, RONALD G.、KOWALCZYK, JAMES J.、MILLER, RAYMON+
DOI:——
日期:——
An annulation method for the synthesis of highly substituted polycyclic aromatic and heteroaromatic compounds
作者:Rick L. Danheiser、Ronald G. Brisbois、James J. Kowalczyk、Raymond F. Miller
DOI:10.1021/ja00164a033
日期:1990.4
A general strategy for the synthesis of highly substituted polycyclicaromatic and heteroaromatic compounds has been developed. The new aromatic annulation is achieved simply by the irradiation of a dichloroethane solution of an acetylene derivative and a vinyl or aryl α-diazo ketone. Mechanistically, the reaction proceeds via the photochemical Wolff rearrangement of the diazo ketone to generate an