A scalable synthesis of meso-substituted dipyrromethanes

JK Laha, S Dhanalekshmi, M Taniguchi…

Index: Organic Process Research and Development, , vol. 7, # 6 p. 799 - 812

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Citation Number: 305

Abstract

... Organic Process Research & Development. ... The procedure has been scaled linearly to obtain >100 g of 5-phenyldipyrromethane. ... 1990s described methods where the aldehyde (0.04−0.5 M) was treated with excess pyrrole (2.1−40 mol equiv) in an acidified organic solvent: BF 3 ...

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