Details

Autor(en) / Beteiligte

• Mu, Li Zhuo
• Jia, Ying Ping
• Yin, Jing Mei
• Zhou, Guang Yun
• Cui, Ying Na
• Gao, Da Bin

Titel

Photopromoted carbonylation of bromobenzene under ambient conditions

Ist Teil von

• Chinese chemical letters, 2009-05, Vol.20 (5), p.531-534

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2009

Link zum Volltext

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• The photopromoted carbonylation of bromobenzene with carbon monoxide catalyzed by inexpensive commercially available cobalt salts [Co(OAc) 2, CoCl 2] was carried out under ambient conditions. The results revealed that methyl benzoate was produced in the presence of basic additives (CH 3ONa, NaOAc or ( n-C 4H 9) 3N). The catalytic activity of Co(OAc) 2 was higher than that of CoCl 2. Furthermore, the activity of the carbonylation was greatly improved by addition of acetophenone, e.g. both the yield and selectivity of the ester were increased from 47% to 91% with Co(OAc) 2 as catalyst and CH 3ONa as additive, while the yield of by-product benzene from hydrodehalogenation of bromobenzene decreased from 32% to 8%.