Hg(OTf)(2)-catalyzed cyclization of alkynyl tert-butylcarbonate leading to cyclic enol carbonate

作者：Yamamoto Hirofumi; Nishiyama Mami; Imagawa Hiroshi; Nishizawa Mugio^*

来源：Tetrahedron Letters, 2006, 47(47): 8369-8373.

DOI：10.1016/j.tetlet.2006.09.067

Mercuric triflate was shown to be a powerful catalyst for the cyclization of alkynyl tert-butylcarbonates giving rise to cyclic enol carbonates under mild conditions. Internal alkynyl carbonate affords endo cyclization product selectively, while terminal alkynyl carbonate provides only exo cyclization product.

• 出版日期2006-11-20