2-(4-Chlorophenylimino)-1-phenylethanone (1) or its adducts with alcohols (2) react with butadiene, cyclopentadiene, cyclohexa-1,3-diene, or cycloheptatriene under BF3 catalysis to give the tetrahydroquinoline derivatives (11), (8a), (12), and (13), respectively.
Removal of toluene-p-sulphonyl groups from sulphonamides. Part 5. Reactions of phenylglyoxal imines and some tosylimines
作者:William R. McKay、George R. Proctor
DOI:10.1039/p19810002443
日期:——
N-tosylarylimines also react with nucleophiles to give useful products. Phenacylimidates underwent [2 + 2]cycloadditions with diphenylketen; such reactions gave complex results with phenacylimines, but the latter reacted with conjugated dienes in the presence of BF3 to give [2 + 4]cycloaddition products in good yield.
Removal of toluene-p-sulphonyl groups from sulphonamides. Part 4. Synthesis of phenylglyoxal imine monomers
作者:William R. McKay、George R. Proctor
DOI:10.1039/p19810002435
日期:——
with bases have been systematically examined. Monomeric C-methoxy-imines are available fromsome of these reactions. C-methoxyphenacylarylamines, made by two routes, were converted into monomeric imines on treatment with noble-metal catalysts. The boron trifluoridecatalysed reactions of aryl aldehydes with sulphonamides provide a new and convenient route to N-sulphonylarylimines.