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Formation of 6,6-dimethyl-2,4-cyclohexadienylidene-1-imines from primary amines and 2,6-diisopropylpyrylium salts

โœ Scribed by Cornelia Uncuta; Mircea D Gheorgiu; Alexandru T Balaban

Publisher
Elsevier Science
Year
1987
Tongue
French
Weight
145 KB
Volume
28
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

2,6-Diisopropyz .-substituted pyryliwn salts 5 react with primary wnines RNH, yielding pyridinium salts, g, and 6,6-dimethyl-2,4-eyclohesadi&yZidene-l-iminium salts, z, in relative cmwunts depending on the group R (160/O for R = Me, 4317 for R = Et, 20/80 for R = iPr, and O/G for R = tBul urovinq that steric factors are as important as aromatic delocaZization in AkROkC reactions Lf pyrylium salts.

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