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    • 61. 发明授权
    • Process for the preparation of 2-hydroxy-4,6-diaryl-1,3,5-triazines
    • 制备2-羟基-4,6-二芳基-1,3,5-三嗪的方法
    • US5288867A
    • 1994-02-22
    • US11931
    • 1993-02-01
    • Dieter ReinehrJean-Pierre Bacher
    • Dieter ReinehrJean-Pierre Bacher
    • C07D251/22C07D251/52
    • C07D251/22
    • There is disclosed a process for the preparation of 2-hydroxy-4,6-diaryl-1,3,5-triazines, which comprises reacting the compound of formula ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.4 alkyl or halogen, with urea, using a base selected from the class of the alkali metal hydrides, alkaline earth metal hydrides, or alkali metal amides, alkaline earth metal amides, or of the alkali metal C.sub.1 -C.sub.4 alcoholates in the presence of a polar solvent, to give the final products in a one step process in which the molar ratio of urea to base is 1:2 to 1:3 and the molar ratio of compound of formula (1) to urea is 2:1 to 5:1.2-Hydroxy-4,6-diaryl-1,3,5-triazines are prepared in very good yield by the inventive process. The compounds are used as intermediates for the synthesis of UV absorbers.
    • 公开了2-羟基-4,6-二芳基-1,3,5-三嗪的制备方法,该方法包括使式(*化学结构*)(1)的化合物(其中R是氢,C1- C4烷基或卤素与尿素反应,使用选自碱金属氢化物,碱土金属氢化物或碱金属氨化物,碱土金属氨化物或碱金属C1-C4醇化物的碱在极性溶剂存在下 在一步法中给出最终产物,其中脲与碱的摩尔比为1:2至1:3,式(1)化合物与脲的摩尔比为2:1至5:1。 通过本发明方法以非常好的收率制备2-羟基-4,6-二芳基-1,3,5-三嗪。 该化合物用作合成UV吸收剂的中间体。
    • 65. 发明授权
    • 1,10-Substituted 10-amino-deca-3,7-diene-nitriles and process for their
preparation
    • 1,10-取代的10-氨基 - 十烯-3,7-二烯 - 腈及其制备方法
    • US4472318A
    • 1984-09-18
    • US461045
    • 1983-01-26
    • Dieter ReinehrJosef Pfeifer
    • Dieter ReinehrJosef Pfeifer
    • C08G69/00C07C67/00C07C253/00C07C255/30C07C255/31C07C255/42C08G69/26C07C121/45C07C121/48C07C121/78
    • C07C255/00C08G69/26
    • Novel 10-amino-deca-3,7-diene-nitriles of the formula ##STR1## are described, in which R.sub.1 is C.sub.1-12 -alkyl, R.sub.2 is H or C.sub.1-12 -alkyl, R.sub.3 is C.sub.1-12 -alkyl, cycloalkyl having 4-12 ring C atoms, C.sub.7-8 -aralkyl, substituted or unsubstituted aryl or, if R.sub.4 =H, --Ch.dbd.CH--alkyl or --C(alkyl).dbd.CH--alkyl each having 1-4 C atoms in the alkyl groups, and R.sub.4 =H, C.sub.1-12 -alkyl, cycloalkyl having 4-12 ring C atoms, C.sub.7-8 -aralkyl or substituted or unsubstituted aryl, or R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 together are C.sub.3-11 -alkylene. The compounds (I) can be reduced in a manner known per se to give the corresponding 1,11-diamino-undeca-3,7-dienes. The latter are valuable intermediates and are suitable especially for the preparation of transparent crosslinkable polyamides.
    • 描述了式(I)的新的10-氨基 - 癸-3,7-二烯 - 腈,其中R 1是C 1-12 - 烷基,R 2是H或C 1-12 - 烷基,R 3是C1- 具有4-12个环C原子的环烷基,C7-8-芳烷基,取代或未取代的芳基,或如果R4 = H,-Ch = CH-烷基或-C(烷基)= CH-烷基,各自具有1- 4个C原子,R4 = H,C1-12烷基,具有4-12个环C原子的环烷基,C7-8-芳烷基或取代或未取代的芳基,或R1和R2和/或R3和R4一起 是C3-11-亚烷基。 化合物(I)可以以本身已知的方式还原,得到相应的1,11-二氨基 - 十一碳-3,7-二烯。 后者是有价值的中间体,并且特别适于制备透明的可交联聚酰胺。