Combination of Transition Metals-(2,4-Pentanedionate) and P2O5 as a Regioselective Catalytic System for Nitric Acid Nitration of Ar-Himachalene

• 作者: Abdallah Karim Brahim Boualy Issam Hossini Larbi El Firdoussi Mohamed Anoir Harrad Mustapha Ait Ali
• 来源期刊: 绿色与可持续化学(英文)
• 学科: 化学
• 关键词: NITRATION SESQUITERPENE Ar-Himachalene M(acac)n P2O5
• 年，卷（期）: 2011,（3）
• 页码范围: 111-115
• 页数: 5页
• 分类号: O6

摘要

A practical system of metals-(2,4-pentanedionate) (M(acac)n (M= Fe, Zn, Co and V)) and P2O5 in the pres- ence of HNO3 catalyzes regioselective nitration of ar-himachalene 1 to mono-nitro-ar-himachalene 2 in mod- erate to high yields. Under mild conditions, the selectivity of nitration of 1 to 2 is excellent compared to the classical method using the nitro-sulphuric mixture HNO3/H2SO4, both mono- and di-nitro-ar-himachalene 2 and 3 are obtained. The reaction offers a very good method for the preparation of nitro-aromatic compounds and provides a useful entry to new functionalized terpenic products.