cas 39133-31-8, 3,4,5-Trimethoxybenzoic acid 2-(dimethylamino)-2-phenylbutyl ester | Articles data ｜lookchem

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39133-31-8

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Direct Conversion of N-Alkylamines to N-Propargylamines through C-H Activation Promoted by Lewis Acid/Organocopper Catalysis: Application to Late-Stage Functionalization of Bioactive Molecules
An efficient catalytic method to convert an α-C-H bond of N-alkylamines into an α-C-alkynyl bond was developed. In the past, such transformations were carried out under oxidative conditions, and the enantioselective variants were confined to tetrahydroisoquinoline derivatives. Here, we disclose a method for the union of N-alkylamines and trimethylsilyl alkynes, without the presence of an external oxidant and promoted through cooperative actions of two Lewis acids, B(C6F5)3 and a Cu-based complex. A variety of propargylamines can be synthesized in high diastereo-and enantioselectivity. The utility of the approach is demonstrated by the late-stage site-selective modification of bioactive amines. Kinetic investigations that shed light on various mechanistic nuances of the catalytic process are presented.
Chan, Jessica Z.,Yesilcimen, Ahmet,Cao, Min,Zhang, Yuyang,Zhang, Bochao,Wasa, Masayuki
supporting information
p. 16493 - 16505
(2020/10/26)

Pharmaceutical combination of otilonium and trimebutine
This invention is related to pharmaceutical combination of otilonium or pharmaceutically acceptable salts thereof and trimebutine or pharmaceutically acceptable salts thereof.
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(2012/08/08)

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Chemical Properties

Melting Point: 79oC
Boiling Point: 457.9 °C at 760 mmHg
Flash Point:230.8 °C
Density: 1.104 g/cm³
Solubility:Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Very Slightly)
Storage Temp.:2-8°C
Refractive Index: 1.5614 (estimate)
PKA: 7.29±0.50(Predicted)
Merck: 14,9699
PSA: 57.23000
LogP: 3.73630

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