Cycloadditions of nitrile oxides with unprotected homoallyl alcohols, followed by Swern oxidations, lead to 5-(2-oxoalkyl)-2-isoxazolines. Subsequent Raney Ni reduction of the resulting heterocycles in ethanol in the presence of excess tetrafluoroboric acid affords substituted pyridine derivatives.
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CAS, Ctr Green Chem & Catalysis, Lanzhou Inst Chem Phys, Lanzhou, Peoples R China
Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R ChinaCAS, Ctr Green Chem & Catalysis, Lanzhou Inst Chem Phys, Lanzhou, Peoples R China
Cui, Xinjiang
Zhang, Yan
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CAS, Ctr Green Chem & Catalysis, Lanzhou Inst Chem Phys, Lanzhou, Peoples R ChinaCAS, Ctr Green Chem & Catalysis, Lanzhou Inst Chem Phys, Lanzhou, Peoples R China
Zhang, Yan
Shi, Feng
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CAS, Ctr Green Chem & Catalysis, Lanzhou Inst Chem Phys, Lanzhou, Peoples R ChinaCAS, Ctr Green Chem & Catalysis, Lanzhou Inst Chem Phys, Lanzhou, Peoples R China
Shi, Feng
Deng, Youquan
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CAS, Ctr Green Chem & Catalysis, Lanzhou Inst Chem Phys, Lanzhou, Peoples R ChinaCAS, Ctr Green Chem & Catalysis, Lanzhou Inst Chem Phys, Lanzhou, Peoples R China