WorldCat Identities

久保光太郎

Overview
Works: 8 works in 13 publications in 2 languages and 19 library holdings
Roles: Author
Publication Timeline
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Most widely held works by 久保光太郎
Nihon kigyō no tame no indo shinshutsu senryaku gaido kyū ando ē( Book )

3 editions published between 2011 and 2016 in Japanese and held by 4 WorldCat member libraries worldwide

Kojin jōhō hogohō taisaku handobukku by Kōtarō Kubo( Book )

2 editions published in 2005 in Japanese and held by 4 WorldCat member libraries worldwide

Ajia shinshutsu kigyō no hōmu : emu ando ē hōsei o chūshin to shite( Book )

2 editions published in 2013 in Japanese and held by 4 WorldCat member libraries worldwide

Nihon kigyo no tame no shingaporu shinshutsu senryaku gaido kyu ando e( Book )

2 editions published in 2014 in Japanese and held by 3 WorldCat member libraries worldwide

Kojin jōhō toriatsukai shuninsha pīesuemu kentei shiken mogi mondaishū : zerogonen jūichigatsu shikenban( Book )

1 edition published in 2005 in Japanese and held by 1 WorldCat member library worldwide

Kojin jōhō toriatsukai shuninsha pīesuemu kentei shiken mogi mondaishū : zerorokunen gogatsu shikenban( Book )

1 edition published in 2006 in Japanese and held by 1 WorldCat member library worldwide

Green Synthesis of 1, 4‐Dihydropyridine Derivative in Water( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract: A simple and environmentally clean synthesis of 4‐methoxycarbonylmethyl‐1, 4‐dihydropyridine‐3, 5‐dicarboxylic acid dimethyl ester was achieved by heating methyl propiolate with an amine salt in water. Excess amine salt accelerated the reaction in the case of aliphatic amines, while stoichiometric amounts of propiolate ester and amine salt resulted in low yield. In the case of aniline, a 1:3 ratio of amine salt and methyl propiolate afforded 77% yield in 24 h. The free amine is proposed to serve as nucleophile for Michael addition reaction, and the liberated proton acts as an electrophilic catalyst. Abstract : A simple and environmentally clean synthesis of 4‐methoxycarbonylmethyl −1, 4‐dihydropyridine‐3, 5‐dicarboxylic acid dimethyl ester was achieved by heating methyl propiolate with an amine salt in water without any other reagents. The free amine is proposed to serve as nucleophile for Michael addition reaction, and the liberated proton acts as an electrophilic catalyst
 
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.92 (from 0.85 for Ajia shins ... to 0.99 for Kojin jōh ...)

Alternative Names
Kubo, Kotaro, 1977-

クボ, コウタロウ

クボ, コウタロウ, 1977-

Languages