| 摘要 |
NEW MATERIAL:The comound of formulaI[R1 and R3 are H or lower alkyl; when X is -CO-, then Y is -NR2- (R2 is H, lower alkyl, phenyl, or aralkyl) and Z is -CH2-, and when X is -NR2-, then Y is -CO- and Z is -O-]. EXAMPLE:10-Methyl-2-oxo-3-phenyl -11- oxa-3, 9-diazatricyclo[6,2,1,0<1>,<6>]-undec- 9-ene. USE:Synthetic intermediates for pharmaceuticals, dyes, etc. PROCESS:The compound of formulaIcan be prepared by heating the oxazole derivative of formula II[e.g. N-(3-butenyl)-4-methyloxazole-5-carboxylic acid anilide]in a solvent such as o-xylene at the boiling point of the solvent. |
