| 摘要 |
1,208,112. Oxadiazolidine derivatives. E.I. DU PONT DE NEMOURS & CO. 12 Sept., 1967 [19 Sept., 1966], No. 20156/70. Divided out of 1,208,111. Heading C2C. [Also in Division A5] The invention comprises compounds of formula where M is O or S; R is where X is Cl, Br, I or C 1-4 alkyl; Z is H, Cl, Br, F, NO 2 , C 1-4 alkoxy or CF 3 ; t is 1, 2, 3 or 4; R 1 is C 1-4 alkyl, C 5-8 cycloalkyl optionally substituted by CH 3 , Cl, or OCH 3 ; C 6-9 -cycloalkylmethyl or C 5-8 cycloalkenyl, except for the compounds of formula where R is C 1-3 alkyl, X is halogen, lower alkyl, lower haloalkyl or nitro and n is 0 to 4, claimed in Specification No. 1,142,917. They may be prepared by the processes disclosed in Specification 1,208,111. |
