Tokyo Kasei Kogyo

The starting allyltrimethylsilane can be prepared in satisfactory yield by the procedure of Sommer. It can also be purchased from PCR Inc., Aldrich Chemical Company, Inc., Fluka A. G., Petrarch Systems Inc., and Tokyo Kasei Kogyo Co., Ltd. The checkers employed material from Petrarch. 

Sigma-Aldrich Fine Chemicals Tokyo Kasei Kogyo (Japan)... 

Tokyo Kasei Kogyo Co., Ltd. (TKK), See Tokyo Chemical Industry Co. Ltd. (Japan)... 

Tokyo Kasei Kogyo Co., Ltd. (TKK), See Tokyo Chemical hidustry Co. Ltd. (Japan), 189 Tokyo Olika Kogyo Co., Ltd., 189 Toluene, 129 Toluene-2,4-dianiine, 130 Toluene 2,4-diisocyanate, 130 Toluene sulfonic acid, 130 o-Tolidiiie, 129 o-Toluidiiie, 130 Toluidines, 130... 

Magnesium turnings were purchased from Wako Pure Chemical Industries and the Aldrich Chemical Company, Inc. Tributyltin chloride was obtained from Tokyo Kasei Kogyo and the Aldrich Chemical Company, Inc. They were used without further purification. 

Camphorsulfonic acid was purchased from Tokyo Kasei Kogyo Co., Ltd. (+)-10-Camphorsulfonic acid could be reduced to 0.1 equiv of the starting material with prolonged reaction time. The checkers used ( )-10-camphorsulfonic acid purchased from Aldrich Chemical Company, Inc. 

Methacrolein from Tokyo Kasei Kogyo Company, Ltd. was dried with calcium sulfate and distilled through a 20-cm Vigreux column under argon prior to use. 

Methoxybenzylamine, triethylamine, and 2-nitrobenzenesulfonyl chloride were purchased by the submitters from Tokyo Kasei Kogyo Co. The checkers obtained 4-methoxybenzylamine and 2-nitrobenzenesulfonyl chloride from Alfa Aesar and triethylamine from Mallinckrodt Inc.. 

Phenylpropyl bromide was purchased from Tokyo Kasei Kogyo Co. or Alfa... 

The submitters used 1-decyne from Farchan Laboratories, Inc., without further purification. The checkers used the material purchased from Aldrich Chemical Company, Inc. and Tokyo Kasei Kogyo Company. 

The solution turns to a white suspension after half of the methanesulfonyl chloride is added methanesulfonyl chloride, available from Tokyo Kasei Kogyo Company, Ltd. (Japan), was used without any purification. 

Company, Inc. without further purification. The checkers purchased it from Tokyo Kasei Kogyo Company. 

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