A Clean and Expedient Synthesis of Pyrido[1,4]oxazepino Spiropyrrolidines Through One-Pot, Three-Component [3 + 2] Cycloaddition Reaction
作者:S. Kathiravan、A. R. Suresh Babu、R. Raghunathan
DOI:10.1080/00397910903531730
日期:2010.11.16
three component synthesis of novel pyrido[1,4]-oxazepine fused spiropyrrolidines has been accomplished in good yields by 1,3-dipolar cycloaddition reaction of azomethine ylide, derived from paraformaldehyde and sarcosine with (E)-4-benzylidene-hexahydro-1H-pyrido[2,1-c][1,4]-oxazepine-3(7H)-one as dipolarophiles derived fromBaylis-Hillmanadducts. The effect of solvent on the [3 + 2]-cycloaddition