para-toluenesulphonic acid silver salt in dichloromethane 1 h; Ambient temperature;
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Oki, Michinori; Shionoiri, Katsumi; Otake, Katsumasa; Ono, Masaru; Toyota, Shinji
Bulletin of the Chemical Society of Japan, 1993 , vol. 66, # 2 p. 589 - 597
Ravindranath, B.; Srinivas, P.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1983 , vol. 22, # 6 p. 592 - 594