作者:Wolfgang G. Wirschun、Martin G. Hitzler、Johannes C. Jochims、Ulrich Groth
DOI:10.1002/1522-2675(200209)85:9<2627::aid-hlca2627>3.0.co;2-h
日期:2002.9
X-Ray-diffraction analysis of (Bu2C)-Bu-t=N-SCl (4b) revealed an almost linear C=N=S unit with an S=N bond order of ca. 1.9 (Fig. 1), in agreement with the structure of a 1-thia-2-azoniaallene chloride. With SCl2 and SbCl5, compound 4b was transformed into the imidosulfurous dichloride 6 (Scheme 2). With morpholine, compounds 4b and 6 afforded the sulfenamide 7and the aminosulfonium salt 8, respectively. The (diaryl-methylene)amidosulfenyl chlorides 4g,h,i reacted with SbCl,, to give SbCl salts of the 1,2-benzisothiazoles 904 most likely via 1-thia-2-azoniaallene intermediates 2 (Scheme 3).