Concerning the reaction of 2-(10-diazo-10H-anthracen-9-ylidene)-malonodinitrile and related compounds with the cryptohydride system formic acid-triethylamine
摘要:
The reaction of 2-(10-diazo-10H-anthracen-9-ylidene)-malonodinitrile (1) with the cryptohydride system formic acid - triethylamine was studied. The reaction product turned out to be anthracen-9-yl-acetonitrile (2a) instead of the expected 10-dicyanomethyl-9,10-dihydro-anthracene-9-yl formate. Compounds related to 1 yielded in this reaction the corresponding 10-substituted anthracen-9-yl-acetonitriles. A mechanism of this reaction is proposed. The product of the formic acid promoted decomposition of 1, compound 3b, as well as its tautomer 4b were also obtained.