The CN shuffle: The described intramolecular alkenyl‐ and acylcyanation reaction of activated alkenes proceed by cleavage of a CN bond. This protocol provides access to functionalized acyclic nitriles with quaternary carbon centers under neutral and mild reaction conditions, demonstrates broad scope, and good functional‐group compatibility and versatility. Y=O or CHR4; R1,R4=electron‐withdrawing group;
The quinoline Reissert compound (5a) was converted to 1-benzoyl-3-bromo-2-cyano-1, 2, 3, 4-tetrahydro-4-methoxyquinoline (6a) by successive treatment in methanol with bromine and aq. sodium carbonate. Hydrolysis of 6a with hydrochrolic acid gave 3-bromoquinoline (4; R = H), but that with aq. sodium hydroxide afforded 4-methoxyquinoline (7a). Reissert compounds derived from some quinoline derivatives (5) gave the corresponding 4-methoxyquinolines (7) through tetrahydroquinolines (6) in a similar way.
Popp et al., Journal of Organic Chemistry, 1961, vol. 26, p. 4930,4932
作者:Popp et al.
DOI:——
日期:——
Regioselectivity in the alkylation of ambident anions of 1-acyl-1,2-dihydroquinaldonitriles (quinoline Reissert compounds)
作者:Harry W. Gibson、Bardia Guilani
DOI:10.1021/jo00300a056
日期:1990.6
GIBSON, HARRY W.;GUILANI, BARDIA, J. ORG. CHEM., 55,(1990) N3, C. 4226-4229