1077-59-4Relevant articles and documents
Weeks,Crane
, p. 3375,3379 (1973)
Preparation and cycloaddition reactions of novel heterocyclic mesomeric betaines
Morgan, David O.,David Ollis,Stanforth, Stephen P.
, p. 5523 - 5534 (2007/10/03)
The heterocyclic mesomeric betaines 6a-c reacted with dimethyl acetylenedicarboxylate and ethyl propiolate giving the 1,3-dipolar cycloaddition products 7a-c and 8a-c, respectively. With esters of maleic, fumaric, acrylic and methacrylic acids, mesomeric betaines 6a and 6b gave substituted tetralone derivatives. (C) 2000 Elsevier Science Ltd.