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    • 46. 发明授权
    • Preparation of benzo[b]thiophenes
    • 苯并[b]噻吩的制备
    • US5292894A
    • 1994-03-08
    • US18499
    • 1993-02-17
    • Klaus EbelJuergen Schroeder
    • Klaus EbelJuergen Schroeder
    • C07C319/14C07C323/22C07D333/54
    • C07D333/54C07C319/14
    • A process for the preparation of benzo[b]thiophenes of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 independently denote hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkyl, nitro, cyano, halo, C.sub.1 -C.sub.4 alkylcarbonyl, benzoyl, C.sub.1 -C.sub.4 alkylcarbonylamino, benzoylamino,N-(C.sub.1 -C.sub.4 alkyl)phenylamino, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylsulfonyl, phenylsulfonyl, aminosulfonyl, aminocarbonyl, C.sub.1 -C.sub.4 phenylalkyl and nitrobenzyl or R.sup.1 +R.sup.2 or R.sup.2 +R.sup.3 or R.sup.3 +R.sup.4 denote a butadienediyl chain optionally substituted by R.sup.1 to R.sup.4, in whicha) thiophenols of the general formula II ##STR2## in which the substituents R.sup.1 to R.sup.4 have the aforementioned meanings, are reacted with chloroacetaldehyde at a temperature ranging from 0.degree. to 150.degree. C. andb) the resulting (arylthio)acetaldehydes of the general formula III ##STR3## in which the substituents R.sup.1 to R.sup.4 have the aforementioned meanings, are cyclized by passing them into polyphosphoric acid or a mixture of phosphoric acid and phosphorus pentoxide at a temperature ranging from 100.degree. to 300.degree. C. and a pressure ranging from 0.001 to 1 bar.
    • 制备通式Ⅰ(I)的苯并[b]噻吩的方法,其中R 1,R 2,R 3,R 4独立地表示氢,C 1 -C 4烷基,C 1 -C 4烷氧基,C 1 -C 4卤代烷基, 硝基,氰基,卤素,C 1 -C 4烷基羰基,苯甲酰基,C 1 -C 4烷基羰基氨基,苯甲酰氨基,N-(C 1 -C 4烷基)苯基氨基,C 1 -C 4烷氧基羰基,C 1 -C 4烷基磺酰基,苯基磺酰基,氨基磺酰基,氨基羰基,C 1 -C 4苯基 并且硝基苄基或R 1 + R 2或R 2 + R 3或R 3 + R 4表示任选被R 1至R 4取代的亚乙二基链,其中a)通式II的苯硫酚(II),其中取代基R 1至R 4具有 上述含义与氯乙醛在0℃至150℃的温度下反应,和b)得到的通式III(III)的(芳硫基)乙醛其中取代基R 1至R 4具有上述含义 通过将它们聚合成多磷酸或磷酸和磷的戊氧基化合物的混合物而环化 在100℃至300℃的温度和0.001至1巴的压力范围内。
    • 47. 发明授权
    • Aminoalkylmelamines
    • 氨基烷基三聚氰胺
    • US4670558A
    • 1987-06-02
    • US788466
    • 1985-10-17
    • Klaus EbelWolfgang Reuther
    • Klaus EbelWolfgang Reuther
    • C07D251/70
    • C07D251/70Y02P20/55
    • Preparation of amidoalkylmelamines and aminoalkylmelamines of the formula I ##STR1## where R.sup.1 is an amidoalkyl group --(CH.sub.2).sub.n --NHZ or an aminoalkyl group --(CH.sub.2).sub.n --NH.sub.2, n is from 2 to 10, preferably from 2 to 6, Z is an amino protective group and R.sup.2 and R.sup.3 independently of one another are each hydrogen or have the same meanings as R.sup.1, are prepared by a process in which a chlorotriazine is reacted with a diamine of the formula H.sub.2 N--(CH.sub.2).sub.n --NHZ, where n and Z have the above meanings, to give an amidoalkylmelamine, and, if required, the group Z is eliminated.
    • 制备式I的酰氨基烷基三聚氰胺和氨基烷基三聚氰胺其中R1是酰氨基烷基 - (CH2)n-NHZ或氨基烷基 - (CH2)n-NH2,n为2-10,优选为2-6 Z是氨基保护基,R 2和R 3彼此独立地各自为氢或具有与R 1相同的含义,通过其中氯代三嗪与式H2N-(CH2)n- NHZ,其中n和Z具有上述含义,得到酰氨基烷基三聚氰胺,并且如果需要,除去基团Z。