Stereospecific Copper-Catalyzed Domino Ring Opening and sp3 C–H Functionalization of Activated Aziridines with N-Alkylanilines
摘要:
Copper efficiently catalyzed nucleophilic ring opening, sp(3) C-H functionalization, and C-N bond formation in the presence of tert-butyl hydroperoxide to afford functionalized imidazolidines starting from N-sulfonylaziridines and N-alkylanilines. The products were obtained in high optical purities (95 -> 99% ee) with excellent functional group tolerance.
N-Monomethylation of amines using paraformaldehyde and H<sub>2</sub>
作者:Hongli Wang、Yongji Huang、Xingchao Dai、Feng Shi
DOI:10.1039/c7cc02314f
日期:——
N-monomethylation of amines is an important topic in fine chemical synthesis. Herein, for the first time, we described a selective N-monomethylation reaction of amines with paraformaldehyde and H2 in the presence of a CuAlOx catalyst. A variety of amines, including primary aromatic amines, benzylamine and cyclohexylamine, as well as secondaryamines, have been shown to be compatible with this reaction.
and moisture‐stable, highly efficient ruthenium NNN pincer complex is reported for the first time to catalyze the tandem transformation of various aromatic and aliphatic nitro compounds into the corresponding N‐methylated amines in up to 98 % yield by using methanol as a green methylating agent. Gram‐scale reactions of challenging nitro substrates demonstrated the practical application aspects of this
Highly Selective N-Monomethylanilines Synthesis From Nitroarene and Formaldehyde via Kinetically Excluding of the Thermodynamically Favorable N,N-Dimethylation Reaction
作者:Hongli Wang、Hangkong Yuan、Benqun Yang、Xingchao Dai、Shan Xu、Feng Shi
DOI:10.1021/acscatal.8b00116
日期:2018.5.4
The synthesis of N-monomethylamine remains a challenging topic because the N,N-dimethylation reaction is thermodynamically favorable. In this work, the kinetically controlled N-monomethylamine synthesis from nitroarene and paraformaldehyde/H2 is reported to have superhigh N-monomethylamine selectivity in the presence of a Pd/TiO2 catalyst. The superior selectivity should be attributed to the preferential
N-单甲胺的合成仍然是一个具有挑战性的课题,因为N,N-二甲基化反应在热力学上是有利的。在这项工作中,据报道,在Pd / TiO 2催化剂存在下,由硝基芳烃和多聚甲醛/ H 2进行动力学控制的N-单甲胺合成具有超高的N-单甲胺选择性。如NH 3 / Me 2 NH-TPD所表明的那样,较高的选择性应归因于Pd / TiO 2表面伯胺优先于N-单甲胺的吸附,而优良的催化活性可能与良好的H有关。2 NH阐明的催化剂的活化能力和高胺吸附能力3 -TPD和H 2 -TPR测试。以含有甲基,甲氧基,羟基,氟化物,三氟甲基,酯和酰胺取代基的各种硝基芳烃为起始原料,均获得了良好的结果,该方法在药物中的潜在合成效用通过药物分子的N-单甲基化来说明,例如如clinidipine,尼美舒利,普鲁卡因和氨基水杨酸甲酯。
[EN] TRICYCLIC DELTA OPIOID MODULATORS<br/>[FR] MODULATEURS DU RECEPTEUR OPIOIDE DOLLAR G(D) TRICYCLIQUES
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2005003131A1
公开(公告)日:2005-01-13
The invention is directed to delta opioid receptor modulators. More specifically, the invention relates to tricyclic δ-opioid modulators. Pharmaceutical and veterinary compositions and methods of treating mild to severe pain and various diseases using compounds of the invention are also described.
Methods and Compositions for Treatment of Scleritis and Related Disorders
申请人:Bedard Patricia W.
公开号:US20080125454A1
公开(公告)日:2008-05-29
The present teachings relate to the field of anti-inflammatory substances and more particularly to compounds that are useful for the treatment of scleritis, a scleritis symptom, or a scleritis-related disorder. In one aspect, methods of treating scleritis, a scleritis symptom, or a scleritis-related disorder generally include administering to a subject a compound of Formula I:
or a pharmaceutically acceptable salt, hydrate or ester thereof, wherein W
1
, W
2
, R
1
, L, X, Y, Z, and n
1
are defined as described herein.