Functionalized (Benzotriazol-1-yl)methanes as 1,1-Dipole Synthon Equivalents in Diverse Annulations to Aromatic and Heteroaromatic Rings
作者:Alan R. Katritzky、Xiaojing Wang、Linghong Xie、Dorin Toader
DOI:10.1021/jo972156w
日期:1998.5.1
The title compounds la-e readily undergo deprotonation and subsequent reactions with the appropriate electrophiles to form intermediates of types 4 and 7 which, upon treatment with Lewis acids, cyclize to afford fused aromatics 5 and 8. Tetrahydronaphthalene 11a, 1,2,3,4-tetrahydrochromanes (11b-d, 13), indanes (16, 18), 9,10-dihydrophenanthrenes (21a-c, 25), and tetrahydro[1,2-alpha]indoles (28, 30) with phenyl, substituted phenyl, and thienyl substituents were prepared in this manner.