A process for preparing a polyhydric alcohol according to the invention comprises subjecting a polyhydric alcohol compound having protected hydroxy group(s) to microwave irradiation in the presence of basic compound(s) or acid(s) having an acid dissociation exponent (pKa) of −8 to 3 at 25° C. to remove the protecting groups of the hydroxy group of the polyhydric alcohol compound. The invention can provide an industrially advantageous process for preparing polyhydric alcohols by readily removing protecting group(s) from protected hydroxy group(s) of polyhydric alcohol compounds.
PROCESS FOR THE PREPARATION OF POLYHYDRIC ALCOHOLS
申请人:National Institute of Advanced Industrial Science and Technology
公开号:EP1298115A1
公开(公告)日:2003-04-02
A process for preparing a polyhydric alcohol according to the invention comprises subjecting a polyhydric alcohol compound having protected hydroxy group(s) to microwave irradiation in the presence of basic compound(s) or acid(s) having an acid dissociation exponent (pKa) of -8 to 3 at 25°C to remove the protecting groups of the hydroxy group of the polyhydric alcohol compound. The invention can provide an industrially advantageous process for preparing polyhydric alcohols by readily removing protecting group(s) from protected hydroxy group(s) of polyhydric alcohol compounds.
Osborne, Alan G.; Dimitrova, Galya T.; Galbally, Paul, Journal of Chemical Research, Miniprint, 2002, # 1, p. 124 - 148
作者:Osborne, Alan G.、Dimitrova, Galya T.、Galbally, Paul、Hughes, David D.、Jones, Clare、Lipman, Anthony L.、Wilstead, Nicola
DOI:——
日期:——
Ring closing metathesis employing organometallic substrates and the templated synthesis of macrocycles
作者:Preston A. Chase、Martin Lutz、Anthony L. Spek、Gerard P.M. van Klink、Gerard van Koten
DOI:10.1016/j.molcata.2006.01.071
日期:2006.7
Templation is a well-known strategy for the selective generation of complex products. Ring-closing metathesis, catalyzed by well-characterized Ru and Mo catalysts, is a powerful method for C=C bond formation and has certainly developed into one of the most important modem reactions in organic synthesis and in polymer chemistry. Despite the extensive research on this reaction, the use of organometallic containing substrates is not well-studied. Here, we give a detailed account of our ongoing efforts to employ ring-closing metathesis with bis(alpha-olefin) substituted pyridines in the presence of trimeric metallopincer templates for the selective synthesis of macroheterocycles with ring sizes up to 81 atoms. (c) 2006 Elsevier B.V. All rights reserved.