UN PROCEDIMIENTO PARA LA PREPARACION DE ESTERES DE ACIDOS CARBAMICO

摘要

Cpds. of formula (I) are new (where R1 is H or 1-4C alkyl; R2 is 1-4C alkyl, 2-4C alkenyl or 3-4C alkinyl; R3 and R4 are each H or 1-4C alkyl or together with the N atom to which they are attached form a satd. 4-6C ring; R5 is H or Me; R6 is H, halogen or 1-4C alkyl). Intermediates of formula (II) are also new (where R is H). (I) are esp. effective against insects resistant to phosphoric acid pesticides. (II) are intermediates in the prepn. of (I). -