申请人:——
公开号:US20040171841A1
公开(公告)日:2004-09-02
The invention relates to novel ligands of the phosphanylbenzothiophenyl-dihydroisoxazoline, phosphanyl-dihydrooxazolyl-indole and phosphanyl-dihydrooxazolyl-benzofuran type, especially compounds of formula I
1
and mixtures of such compounds, wherein
X is oxygen, sulfur, selenium or NQ, wherein Q is unsubstituted or substituted aryl, or alkyl or substituted alkyl;
n is 0, 1, 2, 3 or 4;
A
1
and A
2
are each an organic radical capable of bonding to phosphorus, especially unsubstituted or substituted alkyl, unsubstituted or substituted aryl, unsubstituted or substituted heterocyclyl, unsubstituted or substituted cycloalkyl, or —N(D)
2
wherein D
2
is alkyl or substituted alkyl; or A
1
and A
2
together with the bonding phosphorus atom form a ring, which may be unsubstituted or substituted;
Y, Y′, Y″ and Y′″ are each independently of the other hydrogen or alkyl, substituted alkyl, unsubstituted or substituted aryl, or unsubstituted or substituted heterocyclyl, at least one of the radicals Y, Y′, Y″ or Y′″ being one of the mentioned radicals with the exception of hydrogen; and
Z, when present, is a substituent, it being possible when a plurality of substituents Z is present for those substituents to be selected independently of one another, and to processes for their preparation, to novel precursors and intermediates, to complexes with the said ligands, to their preparation and to their use as catalysts in organic synthesis (especially asymmetric organic synthesis).
本发明涉及膦酰基苯并噻吩基二氢异噁唑啉、膦酰基二氢噁唑基吲哚和膦酰基二氢噁唑基苯并呋喃类型的新型配体,特别是式 I 的化合物
1
以及这类化合物的混合物,其中
X 是氧、硫、硒或 NQ,其中 Q 是未取代或取代的芳基,或烷基或取代的烷基;
n 是 0、1、2、3 或 4;
A
1
和 A
2
各自是能与磷键合的有机基,特别是未取代或取代的烷基、未取代或取代的芳基、未取代或取代的杂环基、未取代或取代的环烷基或 -N(D)
2
其中 D
2
是烷基或取代的烷基;或 A
1
和 A
2
与结合的磷原子一起形成一个环,该环可以是未取代的或取代的;
Y、Y′、Y″和 Y′″各自独立地为氢或烷基、取代烷基、未取代或取代芳基、未取代或取代杂环基,Y、Y′、Y″或 Y′″中至少有一个基为上述基之一,但氢除外;以及
Z,当存在时,是一个取代基,当存在多个取代基 Z 时,这些取代基可以彼此独立地选择,并可用于制备它们的工艺、新型前体和中间体、与所述配体的络合物、它们的制备以及它们在有机合成(特别是不对称有机合成)中作为催化剂的使用。