公开(公告)号：US4414151A

公开(公告)日：1983-11-08

申请号：US282902

申请日：1981-07-13

Applicant: Antoine G. L. J. Breda ,  Jacques G. R. Roussel

Inventor： Antoine G. L. J. Breda ,  Jacques G. R. Roussel

IPC: C09B45/16 ,  C09B45/48 ,  D06P3/32 ,  C09B45/00

CPC classification number: C09B45/16 ,  C09B45/482

Abstract: The invention relates to new chromiferous complex dyestuffs of the general formula: ##STR1## in which R represents a hydrogen atom or a .beta.-hydroxyethyl group, A represents a hydrogen atom, a phenyl group or a phenyl group substituted by one or more halogen atoms or alkyl groups of low molecular weight, and the nucleus B may be substituted by one or more chlorine atoms.These complexes may be used for the coloration of the natural or synthetic polyamides or leather.

Abstract translation: 本发明涉及以下通式的新的含铬复合染料：其中R表示氢原子或β-羟乙基，A表示氢原子，苯基或被一个或多个 更多的卤素原子或低分子量的烷基，并且核B可以被一个或多个氯原子取代。 这些络合物可用于天然或合成聚酰胺或皮革的着色。

公开(公告)号：US4348528A

公开(公告)日：1982-09-07

申请号：US282903

申请日：1981-07-13

Applicant: Antoine G. L. J. Breda ,  Jacques G. R. Roussel

Inventor： Antoine G. L. J. Breda ,  Jacques G. R. Roussel

IPC: C07D231/22

CPC classification number: C07D231/22

Abstract: The invention relates to the preparation of 1-phenyl-3-carbamoyl-5-pyrazolones of the formula: ##STR1## in which the two symbols R and R' may be the same or different and each represents a hydrogen atom, an alkyl radical or a substituted alkyl radical containing 1 to 4 carbon atoms.An aqueous paste of diethyl oxalacetate phenylhydrazone is heated at a temperature not greater than 85.degree. C. until the hydrazone is completely melted, and the aqueous phase is then removed and the remaining hydrazone is treated with 2 to 12 molar equivalents of a compound of the formula HNRR' at a temperature between 20.degree. and 100.degree. C. The formation of 1-phenyl-3-carboxy-5-pyrazolone is thus avoided.

Abstract translation: 本发明涉及下式的1-苯基-3-氨基甲酰基-5-吡唑啉酮的制备：其中两个符号R和R'可以相同或不同，并且各自表示氢原子，烷基 或含有1至4个碳原子的取代的烷基。 在不高于85℃的温度下加热乙酸二乙酯苯腙的水性糊剂，直到腙完全熔化，然后除去水相，剩余的腙用2至12摩尔当量的 式HNRR'在20〜100℃的温度下进行。因此避免形成1-苯基-3-羧基-5-吡唑啉酮。