Oxidative skeletal rearrangement of 1,1′-binaphthalene-2,2′-diamines (BINAMs) <i>via</i> C–C bond cleavage and nitrogen migration: a versatile synthesis of U-shaped azaacenes
作者:Youhei Takeda、Masato Okazaki、Satoshi Minakata
DOI:10.1039/c4cc04911j
日期:——
An oxidative skeletal rearrangement of 1,1′-binaphthalene-2,2′-diamines (BINAMs) that involves the cleavage of a strong C–C single bond of the binaphthalene unit and the nitrogen migration has been discovered.
Process for producing an optically active ruthenium-phosphine complex and process for producing an optically active alcohol by using the complex
申请人:——
公开号:US20010039354A1
公开(公告)日:2001-11-08
Provided is a process for preparing an optically active ruthenium-phosphine complex represented by the following formula (1):
1
wherein L represents a bidentate ligand compound of a tertiary phosphine; X represents a halogen atom; and * means chiral center (L* is an optically active substance), which comprises reacting a ruthenium-phosphine complex represented by:
Ru
m
X
n
L
p
A
q
or [RuX(D)(L)]X
wherein, X and L have the same meanings as described above (L is a racemic modification); A represents triethylamine (Et
3
N), etc.; and m, n, p and q each stands for an integer and D represents benzene, etc. with ½ equivalent of a specific optically active chiral diamine, thereby inactivating one of the enantiomers; and then with a specific optically active diamine derivative, thereby activating the other enantiomer.