A variety of acetals and ketals are efficiently and rapidly converted to the corresponding carbonyl compounds by using WCl6 in dichloromethane or acetonitrile at room temperature.
2,3-Dichloro-5,6-dicyano-<i>p</i>-benzoquinone (DDQ) as a Highly Efficient and Mild Catalyst for Diethyl Acetalization of Carbonyl Compounds
作者:Babak Karimi、Ashraf Miri Ashtiani
DOI:10.1246/cl.1999.1199
日期:1999.11
Various types of structurally different carbonyl compounds in the presence of ethyl orthoformate (EtO)3CH could be efficiently converted to their diethyl acetals by using a catalytic amount (1-3 mol%) of DDQ under mild reaction conditions.
Zirconium Tetrachloride (ZrCl<sub>4</sub>) Catalyzed Highly Chemoselective and Efficient Transthioacetalization of Acetals
作者:Habib Firouzabadi、Nasser Iranpoor、Babak Karimi
DOI:10.1055/s-1999-2609
日期:1999.3
Zirconium tetrachloride (ZrCl4) is an efficient catalyst for the highly chemoselective transthioacetalization of acetals under mild reaction conditions.
Tungsten Hexachloride (WCl<sub>6</sub>), A Highly Efficient and Chemoselective Catalyst for Acetalization of Carbonyl Compounds
作者:H. Firouzabadi、N. Iranpoor、B. Karimi
DOI:10.1080/00397919908086226
日期:1999.7
Various types of aldehydes and ketones could be converted chemoselectively to their corresponding 1,3-dioxanes or diethyl acetals in Ihc. presence of catalytic amounts of tungsten hexachloride (WCl6) in good to excellent yields in CH2Cl2 or under neat conditions, respectively.
Lipshutz, Bruce H.; Harvey, Daniel F., Synthetic Communications, 1982, vol. 12, # 4, p. 267 - 278