Enantioselective Allylation of Ketone-Derived Benzoylhydrazones: Practical Synthesis of Tertiary Carbinamines
作者:Richard Berger、Keiko Duff、James L. Leighton
DOI:10.1021/ja0486418
日期:2004.5.1
A highly practical method for the enantioselective allylation of ketone-derived benzoylhydrazones has been developed. The previously reported strained silacycle reagent 1 reacts with a wide variety of benzoylhydrazones to give the hydrazide products with good to excellent enantioselectivity (84-97% ee). A mechanism in which the acylhydrazone becomes caovalently attached to the silane has been established
The invention concerns a water soluble compound of formula (a) wherein: A represents naphthyl or phenyl; and Ar
1
and Ar
2
independently represent a saturated or aromatic carbocyclic group; X
a
, X
b
are independently selected among an amino group, an ammonium group and an amino group modified by a linear polyoxyalkylene chain, provided that at least one of X
a
and X
b
represents ammonium or modified amino.
Compounds of formula VII are described:
1
wherein A represents phenyl or naphthyl and
Ar
1
and Ar
2
independently represent a saturated or aromatic carbocyclic group. The compounds may be prepared by reducing the nitrile functions of a compound of formula I:
2
描述了式 VII 的化合物:
1
其中 A 代表苯基或萘基,且
Ar
1
和 Ar
2
分别代表饱和或芳香碳环基团。这些化合物可通过还原式 I 化合物的腈基官能团来制备:
2