Two novel diastereoselective three-component reactions of alkenes or 3,4-dihydro-(2H)-pyran with urea/thiourea-aldehyde mixtures: [4 + 2] cycloaddition vs Biginelli-type reaction.
Two novel diastereoselective three-component reactions of alkenes or 3,4-dihydro-(2H)-pyran with urea/thiourea-aldehyde mixtures are described. [reaction: see text]
Zhu
Yulin
Y
Department of Chemistry, Zhejiang University, Hangzhou 310027, P.R. China.
Huang
Shenlin
S
Wan
Jieping
J
Yan
Lei
L
Pan
Yuanjiang
Y
Wu
Anxin
A
D000447:Aldehydes / Q000737:chemistry*; D000475:Alkenes / Q000737:chemistry*; D002384:Catalysis; D015394:Molecular Structure; D011714:Pyrans / Q000737:chemistry*; D013237:Stereoisomerism; D013890:Thiourea / Q000737:chemistry*; D014508:Urea / Q000737:chemistry*
C518272:3,4-dihydro-(2H)-pyran; D000447:Aldehydes; D000475:Alkenes; D011714:Pyrans; D014508:Urea; D013890:Thiourea