Efficient and Selective Formation of Mixed Acetals by Nafion‐H SAC‐13 Silica Nanocomposite Solid Acid Catalyst
摘要:
Various types of hydroxy compounds can readily be converted to the corresponding mixed acetals with dialkoxymethanes in the presence of SAC-13 solid superacid. The transformation is almost instantaneous, product acetals are isolated in good to excellent yields, and the catalyst can be reused with minor loss of activity. Comparative studies were also carried out with p-toluenesulfonic acid and BF3 (.) OEt2.
Mamedov,S.; Avanesyan,M.A., Journal of general chemistry of the USSR, 1961, vol. 31, p. 3317 - 3320
作者:Mamedov,S.、Avanesyan,M.A.
DOI:——
日期:——
(Meth)Acrylate, Polymer and Resist Composition
申请人:Ootake Atsushi
公开号:US20080003529A1
公开(公告)日:2008-01-03
A polymer contains a constituent unit having a specific acetal skeleton. This polymer is able to be used as a resist resin in DUV excimer laser lithography, electron beam lithography, EUV lithography, or the like.
(METH)ACRYLATE, POLYMER AND RESIST COMPOSITION
申请人:Ootake Atsushi
公开号:US20090226851A1
公开(公告)日:2009-09-10
A polymer contains a constituent unit having a specific acetal skeleton. This polymer is able to be used as a resist resin in DUV excimer laser lithography, electron beam lithography, EUV lithography, or the like.