Solvent-free catalytic preparation of 1, 1-diacetates from aldehydes using a Wells–Dawson acid (H 6 P 2 W 18 O 62· 24H 2 O)
GP Romanelli, HJ Thomas, GT Baronetti, JC Autino
Index: Romanelli, Gustavo P.; Thomas, Horacio J.; Baronetti, Graciela T.; Autino, Juan C. Tetrahedron Letters, 2003 , vol. 44, # 6 p. 1301 - 1303
Full Text: HTML
Citation Number: 107
Abstract
Aromatic and aliphatic aldehydes are transformed in 1, 1-diacetates (acylals) in mild conditions, by a treatment with acetic anhydride and a Wells–Dawson acid (H6P2W18O62· 24H2O). gem-Diacetylation proceeds in Ac2O with a little as 1% mol Wells–Dawson acid at room temperature and under solventless conditions, obtaining very good to excellent yields (88–98%) of 1, 1-diacetates (19 examples). Neither 4-dimethylaminobenzaldehyde nor ...
Related Articles:
[Tourani, Hesam; Naimi-Jamal, Mohammad Reza; Dekamin, Mohammad Ghorban; Amirnejad, Meysam Comptes Rendus Chimie, 2012 , vol. 15, # 11-12 p. 1072 - 1076]
[Galstyan; Sedykh Russian Journal of General Chemistry, 2010 , vol. 80, # 5 p. 948 - 952]
[Palacios-Grijalva, Laura Nadxieli; Cruz-Gonzalez, Deysi Y.; Lomas-Romero, Leticia; Gonzalez-Zamora, Eduardo; Ulibarri, Gerardo; Negron-Silva, Guillermo E. Molecules, 2009 , vol. 14, # 10 p. 4065 - 4078]
[Palacios-Grijalva, Laura Nadxieli; Cruz-Gonzalez, Deysi Y.; Lomas-Romero, Leticia; Gonzalez-Zamora, Eduardo; Ulibarri, Gerardo; Negron-Silva, Guillermo E. Molecules, 2009 , vol. 14, # 10 p. 4065 - 4078]
Oxidation of 2-acetoxytoluene with ozone in acetic anhydride
[Galstyan Russian Journal of General Chemistry, 2008 , vol. 78, # 9 p. 1690 - 1694]