Aroylnitrile oxide cyclizations. 2. Synthesis of (3-aroylisoxazol-5-yl)alkanoic acids
作者:John J. Tegeler、Craig J. Diamond
DOI:10.1002/jhet.5570240331
日期:1987.5
Intermolecular cyclization of 1,3-dipolar aroylnitrileoxides to terminal alkynols followed by phase transfer catalyzed oxidation provided a short, convenient route to several novel (3-aroylisoxazol-5-yl)alkanoicacids.
(Isoxazol-3-yl)arylmethanones, a process for their preparation and their use as medicaments
申请人:——
公开号:EP0189771A3
公开(公告)日:1986-10-08
There are disclosed novel compounds having the
formula where each X is independently hydrogen, halogen - (F, Cl, Br or I), loweralkyl or loweralkoxy; m is 1 or 2; R' is hydrogen or loweralkyl; and R is
t, 2 or 3, each of R, and R2 being independently hydrogen or loweralkyl and R3 beingan optical antipode thereof or a pharmaceutically acceptable acid addition salt thereof, which are useful as antihypertensive, analgesic and antiinflammatory agents, methods for synthesizing them, and pharmaceutical compositions comprising an effective amount of such a compound.
TEGELER, J. J.;DIAMOND, C. J., J. HETEROCYCL. CHEM., 24,(1987) N 3, 701-703
作者:TEGELER, J. J.、DIAMOND, C. J.
DOI:——
日期:——
US4562187A
申请人:——
公开号:US4562187A
公开(公告)日:1985-12-31
Effect of Aqueous Polyethylene Glycol on 1,3-Dipolar Cycloaddition of Benzoylnitromethane/Ethyl 2-Nitroacetate with Dipolarophiles: Green Synthesis of Isoxazoles and Isoxazolines
作者:R. Gangadhara Chary、G. Rajeshwar Reddy、Y. S. S. Ganesh、K. Vara Prasad、Akula Raghunadh、T. Krishna、Soumita Mukherjee、Manojit Pal
DOI:10.1002/adsc.201300712
日期:2014.1.13
A 1:1 mixture of water‐polyethyleneglycol (PEG) facilitated the 1,3‐dipolar cycloaddition of benzoylnitromethane/ethyl 2‐nitroacetate with terminal alkynes or alkenes leading to isoxazoles or isoxazolines under green conditions. The methodology is free from the use of any base, catalyst, dehydrating agent or hazardous solvent.