Preparation from Sulphenyl and Selenenyl Halides

Preparation from Sulphenyl and Selenenyl Halides.—Most of the methods published in the period under review lead to -halogeno-sulphides through additions 

Toshimitsu, T. Aoai, H. Owada, S. Uemura, and M. Okano, J. Chem. Soc., Chem. Commun., 1980,412. 

2- Adducts result from the butadienes and 0-silyl dienolates MejSiOCH=CHCH=CH2, the former rearranging to 1,4-adducts spontaneously (excepting the adduct with 1,3-butadiene itself), while the latter lose MejSiCl, resulting in overall y-substitution of cr)9-unsaturated aldehydes. The corresponding process occurs with H2C=CH-C(OSiMe3)=CHMe and PhSeCl.  

3764 Tnine mechanistic studies of additions of RSCl and RSeCl to alkenes and alkynes]  

Krimer, V. A. Smit, V. S. Bogdanov, and E. A. Vorobeva, Izv. Akad. Nauk SSSR, Ser. Khim., 1979, 563 M. Z. Krimer, E. A. Vorobeva, and V. A. Smit, Tezisy Dokl.-Vses. Kor f. Stereokhim. Konform. Anal. Org. Neftekhim. Sint. 3rd, 1976, WO (Chem. Abstr., 1978, 88, 

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