MANUFACTURE OF 10,11-DIHYDRO-5H-DIBENZO(A,D) CYCLOPEPTEN-5-OCYLOPEPTEN-5-ONE AND SUBSTITUENT PRODUCT

摘要

10,11-Dihydro-5H-dibenzo[a,d]cyclohepten-5-one and substitution products thereof are prepared by cyclocondensation of the corresponding dibenzyl-o-carboxylic acids in the presence of only catalytic amounts of a concentrated acid.