作者:Stefan E. Boiadjiev、David A. Lightner
DOI:10.1016/s0040-4020(99)00617-1
日期:1999.9
Dipyrrinones formed by DBU and n-Bu3P-promoted condensation of 5-p-toluene-sulfonylpyrrolinones with pyrrole 2-aldehydes, gave high yields of product with predominantly the E-configuration when the aldehyde had a 5-carboethoxy group. The 4E-dipyrrinones were readily purified by chromatography and were stable in solutions shielded from light. (C) 1999 Elsevier Science Ltd. All rights reserved.