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1. 发明授权

KR100666191B1 4시아노페닐 이소시아네이트의 제조방법 有权
标题翻译：一种异氰酸4-氰基苯酯的制备方法
公开(公告)号：KR100666191B1
公开(公告)日：2007-01-09
申请号：KR1020060020440
申请日：2006-03-03
申请人： (주)위즈켐
发明人： 조양래 , 심영지 , 심광택 , 정선이 , 조영수
IPC分类号： C07C263/04 , C07C265/12 , C07C263/12
摘要： Provided is a method for preparing 4-cyanophenyl isocyanate, which has no harmful factors in processing steps, avoids a need for an expensive material or catalyst, and includes simple processing steps. The method for preparing 4-cyanophenyl isocyanate comprises the steps of: (a) reacting 4-cyanobenzoate represented by the following formula (II) with hydrazine to obtain 4-cyanobenzhydrazide represented by the following formula (III); and (b) reacting the 4-cyanobenzhydrazide represented by formula (III) obtained from step (a) with an nitrous acid inorganic salt or nitrous acid ester to obtain 4-cyanophenyl isocyanate represented by the following formula (I). In the reaction scheme, R is H or a C1-C6 alkyl, and R' is a C1-C6 alkyl.
摘要翻译：提供了一种在加工步骤中没有有害因素的4-氰基苯基异氰酸酯的制备方法，避免了昂贵的材料或催化剂的需要，并且包括简单的加工步骤。制备4-氰基苯基异氰酸酯的方法包括以下步骤：（a）将由下式（II）表示的4-氰基苯甲酸与肼反应得到由下式（III）表示的4-氰基苯甲酰肼; 和（b）将由步骤（a）获得的由式（III）表示的4-氰基苯甲酰肼与亚硝酸无机盐或亚硝酸酯反应，得到由下式（I）表示的4-氰基苯基异氰酸酯。在反应方案中，R为H或C 1 -C 6烷基，R'为C 1 -C 6烷基。

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