申请人:Wu Yanzhong
公开号:US20080319204A1
公开(公告)日:2008-12-25
Processes for preparing substituted oxindole-2-ones, and specifically the following, are described, wherein R
1
-R
4
, R
6
, and n are defined herein. The processes include reacting a first alkali metal hydroxide, a tetraalkyl ammonium salt, a benzonitrile, and R
6
X or XCH
2
(CH
2
)
n
X′, wherein R
6
is C
1
to C
6
alkyl, substituted C
1
to C
6
alkyl, C
3
to C
8
cycloalkyl, substituted C
3
to C
8
cycloalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic, or substituted heterocyclic, X and X′ are, independently, leaving groups, and n is 1 to 5; (ii) reacting the product of step (i) with a second alkali metal hydroxide at a temperature of at least about 60° C.; (iii) reacting the product of step (ii) with an alkali alkoxide at a temperature of at least about 140° C. to form an oxindol-2-one; (iv) brominating the oxindol-2-one; and (v) coupling the brominated oxindol-2-one with a coupling reagent.
本文描述了制备取代的氧化吲哚-2-酮的过程,特别是以下过程,其中R1-R4,R6和n在此定义。该过程包括反应第一种碱金属氢氧化物,四烷基铵盐,苯甲腈和R6X或XCH2(CH2)nX′,其中R6是C1至C6烷基,取代的C1至C6烷基,C3至C8环烷基,取代的C3至C8环烷基,芳基,取代的芳基,杂环芳基,取代的杂环芳基,杂环,或取代的杂环,X和X′是独立的离去基团,n为1至5; (ii)以至少约60℃的温度反应步骤(i)的产物与第二种碱金属氢氧化物; (iii)以至少约140℃的温度反应步骤(ii)的产物与碱金属醇盐形成氧化吲哚-2-酮; (iv)溴化氧化吲哚-2-酮; (v)将溴化的氧化吲哚-2-酮与偶联试剂偶联。