Нужны следующие статьи:
1. Abderrahim Bouzide, Gilles Sauvé
Highly selective silver(I) oxide mediated monoprotection of symmetrical diols
Tetrahedron Letters
Volume 38, Issue 34, 25 August 1997, Pages 5945-5948
Код: Выделить всё
http://dx.doi.org/10.1016/S0040-4039(97)01328-2Lithium triflate (LiOTf) catalyzed efficient and chemoselective tetrahydropyranylation of alcohols and phenols under mild and neutral reaction conditions
Tetrahedron Letters
Volume 43, Issue 30, 22 July 2002, Pages 5353-5355
Код: Выделить всё
http://dx.doi.org/10.1016/S0040-4039(02)00892-4Cupric sulfate pentahydrate (CuSO4·5H2O): a mild and efficient catalyst for tetrahydropyranylation/depyranylation of alcohols and phenols
Tetrahedron Letters
Volume 45, Issue 42, 11 October 2004, Pages 7891-7894
Код: Выделить всё
http://dx.doi.org/10.1016/j.tetlet.2004.08.141