Quaternary ammonium salt-assisted synthesis of extended π-systems from methyldiazines and aromatic aldehydes
4-Methyl- and 4,6-dimethylpyrimidines, methyl- and 2,5-dimethylpyrazines, as well as 3-methylpyridazine readily react with aromatic aldehydes in a hot solution of sodium hydroxide in the presence of a catalytic amount of a quaternary ammonium salt and in
Vanden Eynde,Pascal,Van Haverbeke,Dubois
p. 3167 - 3173
(2007/10/03)
AN ALDOL-TYPE REACTION OF ACTIVE METHYL GROUPS OF NITROGEN-CONTAINING HETEROAROMATIC COMPOUNDS
Active methyl groups of nitrogen-containing heteroaromatic compounds react with benzaldehydes in the presence of 9-BBN triflate and diisopropylethylamine in dichloromethane to give the corresponding aldol-type products under mild conditions.
Hamana, Hiroshi,Sugasawa, Tsutomu
p. 333 - 336
(2007/10/02)
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