Novel Base-Promoted Rearrangement of 2-(4-Cyano-, 2-Nitro-, and 4-Nitrobenzyloxy)tropones and 2-(2-Oxo-2-phenethyloxy)tropone to 2-[(4-Cyano-, 2-Nitro-, and 4-Nitrophenyl)hydroxymethyl]tropones and 2-(1-Hydroxy-2-oxo-2-phenethyl)tropone
TAKESHITA HITOSHI; MORI AKIRA; SUIZU HIROSHI, BULL. CHEM. SOC. JAP., 60,(1987) N 4, 1429-1432
作者:TAKESHITA HITOSHI、 MORI AKIRA、 SUIZU HIROSHI
DOI:——
日期:——
Tropolone derivatives as an anti-mycoplasma agent
申请人:SHIONOGI SEIYAKU KABUSHIKI KAISHA
trading under the name of
SHIONOGI & CO. LTD.
公开号:EP0267378B1
公开(公告)日:1992-11-04
US4950686A
申请人:——
公开号:US4950686A
公开(公告)日:1990-08-21
Novel Base-Promoted Rearrangement of 2-(4-Cyano-, 2-Nitro-, and 4-Nitrobenzyloxy)tropones and 2-(2-Oxo-2-phenethyloxy)tropone to 2-[(4-Cyano-, 2-Nitro-, and 4-Nitrophenyl)hydroxymethyl]tropones and 2-(1-Hydroxy-2-oxo-2-phenethyl)tropone
作者:Hitoshi Takeshita、Akira Mori、Hiroshi Suizu
DOI:10.1246/bcsj.60.1429
日期:1987.4
The base-catalyzed rearrangement of 2-(2-nitro-, 4-nitro-, and 4-cyanobenzyloxy)tropones smoothly yielded corresponding 2-[(aryl)hydroxymethyl]tropones, while their thermolysis gave 3-(arylmethyl)tropolones. This reaction has no precedent analogy in troponoid chemistry, and this rearrangement is widely applicable to the 2-troponyl ethers of alcohols carrying an electron-attractive substituent on the α-position, as was verified by the occurrence of 2-(1-hydroxy-2-oxo-2-phenethyl)tropone from 2-(2-oxo-2-phenethyloxy)tropone.