(5R)-4,5-dihydro-isoxazole derivatives as well as 1-(2-chloroacetyl)-4-piperidinecarbonitrile and 1-(2-chloroacetyl)-N-(1,1-dimethylethyl)-4-piperidinecarboxamide as intermediates in the preparation of e.g. 4-[4-[(5R)-4,5-dihydro-isoxazoI-3-yl]-thiazol-2-yl]-piperidine derivatives as fungicides for crop protection.
Exemplary intermediates are e.g. N,N-dimethyl-[(5R)-4,5-dihydro-5-phenyl-isoxazol-3-yl]-carboxamide and 2-bromo-[(5R)-4,5-dihydro-5-phenyl-isoxazol-3-yl]-ethanone.
(5R)-4,5-二氢-
异噁唑衍
生物以及 1-(2-
氯乙酰基)-4-
哌啶甲腈和 1-(2-
氯乙酰基)-N-(
1,1-二甲基乙基)-4-
哌啶甲酰胺作为中间体,用于制备例如.g.4-[4-[(5R)-4,5-二氢-
异恶唑-I-3-基]-
噻唑-2-基]-
哌啶衍
生物作为作物保护用杀菌剂的中间体。
典型的中间体有 N,N-二甲基-[(5R)-4,
5-二氢-5-苯基-
异恶唑-3-基]-甲酰胺和 2-
溴-[(5R)-4,
5-二氢-5-苯基-
异恶唑-3-基]-乙酮等。