申请人:Tobler Hans
公开号:US20090221856A1
公开(公告)日:2009-09-03
The present invention relates to a novel a process for the preparation of the compound of the general formula (I), wherein R
1
and R
2
are independently H or C
1-6
alkyl, which comprises treating with a reducing agent either a compound of the general formula (II), wherein R
1
and R
2
have the meanings given for the compound of the formula (I), R
3
is H or C
1-4
alkyl and Ph is phenyl, or a compound of the general formula (III), wherein R
1
, R
2
, R
3
and Ph have the meanings given for the compound of the formula (II), the reducing agent being effective to cleave the benzyl moiety Ph-CH(R
3
)— from the benzylamino moiety PhCH(R
3
)NH— in the compound of the formula (II) or in the compound of the formula (III) to leave an amino group and, in addition, in the case of the compound of the formula (III), to reduce both the 2,3-double bond and the double bond joining the R
1
R
2
C— moiety to the 9-position of the benzonorbornene ring to single bonds. It also relates to processes for the preparation of the compounds (II) and (III) and their precursors and to the compounds (II) and (III) themselves and certain of their precursors, which are novel compounds. The compounds (I) are useful for the preparation of various fungicidal heterocyclyl-carboxylic acid benzonorbornen-5-yl-amides.
本发明涉及一种制备通式(I)化合物的新型方法,其中R1和R2独立地表示H或C1-6烷基,包括以下步骤:使用还原剂处理通式(II)化合物或通式(III)化合物,其中R1和R2具有通式(I)化合物中所给定的含义,R3为H或C1-4烷基,Ph为苯基,所述还原剂能够从通式(II)化合物或通式(III)化合物的苄基Ph-CH(R3)中切除苄基PhCH(R3)NH-,以留下氨基,并且在通式(III)化合物的情况下,还能够将2,3-双键和连接R1R2C-基团到苯并[2.2.1]环庚烯环的9位的双键还原为单键。本发明还涉及制备化合物(II)和(III)及其前体的方法,以及化合物(II)和(III)本身及其某些前体,这些是新型化合物。通式(I)化合物可用于制备各种杀真菌的杂环羧酸苯并[2.2.1]环庚烯-5-基酰胺。