| 摘要 |
<p>NEW MATERIAL:A bicyclo[4,3,3]nona-2-ene shown by formula I [R is CH2OR<2> (R<2> is H or OH-protecting group) or COOR<3> (R<3> is H or carboxyl-protecting group); R<1> is carboxyl protecting group and A-B is shown by formula II or III]. EXAMPLE:1,7-Dimethyl-2,3-bis ( methoxycarbonyl )-7-(3-t-butyldiphenyl-silyloxy-1- methyl-propyl)bicycol[4,3,0]nona-2,4-diene. USE:An intermediate for producing a selective controller against nematodes living in plants. PREPARATION:3-Butenylmethane is added to 3,4-dimethyl 2-cyclopentenone, successively subjected to ring closure, Bayer-Villiger oxidation reaction, reduced, the primary hydroxyl group is protected, the secondary hydroxyl group is oxi dized to give a compound sown by formula IV, which is processed through compound shown by formula V and formula VI to give a compound shown by formula I.</p> |
