Synthesis of 1-formyldipyrromethanes

M Ptaszek, BE McDowell…

Index: Nagasaki, Izuru; Suzuki, Yumiko; Iwamoto, Ken-Ichi; Higashino, Takeo; Miyashita, Akira Heterocycles, 1997 , vol. 46, # 1 p. 443 - 450

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Citation Number: 32

Abstract

... Alternatively, treatment of 1b with EtMgBr followed by p-tosyl cyanide 16 afforded 1-cyanodipyrromethane 1b-N in 31% yield, together with an unidentified ... oil was chromatographed [silica, 7 × 26 cm, total 440 g, CH 2 Cl 2 to CH 2 Cl 2 /ethyl acetate (10:1), total volume ∼6 L ...