Regio- and Stereocontrolled Synthesis of (Z)-α-(Phenylseleno)sulfinyl and -sulfonyl Alkenes via Sulfenic Acids, and a Study of their Reactivity
作者:Maria Chiara Aversa、Anna Barattucci、Paola Bonaccorsi、Andrea Temperini
DOI:10.1002/ejoc.201100759
日期:2011.10
the synthesis of α-(phenylseleno)sulfinyl and -sulfonyl alkenes has been described. 1-(Phenylseleno)ethenyl sulfoxides were prepared by the syn-addition of in situ-generated sulfenic acids on to the triple bond of suitably substituted (phenylseleno)acetylenes. 1-(Phenylseleninyl)ethenyl sulfones were obtained by further oxidation of their sulfinyl analogues. The mild conditions of the sulfenic acid/
已经描述了合成α-(苯基硒基)亚磺酰基和-磺酰基烯烃的一般程序。1-(苯基硒基)乙烯基亚砜是通过将原位生成的次磺酸顺式加成到适当取代的(苯基硒基)乙炔的三键上来制备的。1-(Phenylseleninyl) 乙烯基砜是通过进一步氧化它们的亚磺酰基类似物而获得的。次磺酸/(苯基硒基)炔顺式加成的温和条件及其立体特异性和区域选择性使我们能够获得具有明确立体化学和双键敏感取代基的贫电子烯烃。手性 (Z)-1-[(2,3,4,6-四-O-乙酰基-β-D-吡喃葡萄糖基)亚磺酰基]-1-(苯基硒基)-1-己烯也通过对映体纯2,3获得, 4,6-四-O-乙酰基葡萄糖次磺酸。