... (26) J. Klein and E. Dunkelblum, to be published. ... Chem., 1,366 (1957). Anal. ... The product was extracted several times with hexane and the organic layer was washed with water, Distillation gave 6.5 g of XS'III: bp 135' (690 mm), tmax (neat) 1650 cm-l, 1224~ 1.4380. Anal. ...