The invention provides compounds which exert excellent fungicidal activities against various plant diseases and are useful as active ingredients of pesticides permitting the control of rice blast and so on even in low dosages. Compounds represented by the general formulae (1a) to (1d) or salts thereof: (1a) (1b) (1c) (or) (1d) wherein R
1
and R
2
are each C
1-6
alkyl or the like; R
3
and R
4
are each hydrogen, halogeno, or the like; R
5
is hydrogen, C
1-6
alkyl, or the like; X is halogeno, C
1-6
alkyl, or the like; Y is halogeno, C
1-6
alkyl, or the like; n is an integer of 0 to 4; and m is an integer of 0 to 6.
The invention provides compounds which exert excellent fungicidal activities against various plant diseases and are useful as active ingredients of pesticides permitting the control of rice blast and so on even in low dosages. Compounds represented by the general formulae (1a) to (1d) or salts thereof: (1a) (1b) (1c) (or) (1d) wherein R1 and R2 are each C1-6 alkyl or the like; R3 and R4 are each hydrogen, halogeno, or the like; R5 is hydrogen, C1-6 alkyl, or the like; X is halogeno, C1-6 alkyl, or the like; Y is halogeno, C1-6 alkyl, or the like; n is an integer of 0 to 4; and m is an integer of 0 to 6.
Rhodium(II)-Catalyzed Enantioselective Intermolecular Aziridination of Alkenes
作者:Vincent Boquet、Ali Nasrallah、Alejandro L. Dana、Erwan Brunard、Pablo H. Di Chenna、Fernando J. Duran、Pascal Retailleau、Benjamin Darses、Marie Sircoglou、Philippe Dauban
DOI:10.1021/jacs.2c07337
日期:2022.9.21
dirhodium(II) tetracarboxylates are highly efficient catalysts for the asymmetric intermolecular aziridination of substituted alkenes with sulfamates. The reaction proceeds with high levels of efficiency and chemoselectivity to afford aziridines with excellent yields of up to 95% and enantiomeric excesses of up to 99%. The scope of the alkene aziridination includes mono-, di-, and trisubstituted olefins as well