A facile one-pot synthesis of 2,3,6-trisubstituted pyridine derivatives from bicyclic ketal by using TMSOMs (5 equiv.)-BF3·Et2O (1 equiv.)
作者:Jong-Gab Jun、Tae Hee Ha、Dae-Whang Kim
DOI:10.1016/0040-4039(94)88032-8
日期:1994.2
TMSOMs (5equiv.)-BF3·Et2O (1equiv.) complex was studied for the selective cleavage of bicyclicketal and a useful method was found for the preparation of 2,3,6-trisubstitutedpyridine in good yield. The bicyclicketal was cleaved and rearranged to 1,5-diketone which was then reacted with nitrile affording pyridine as a sole product in one-flask.
A novel one step preparation of 2,6-disubstituted pyridines from bicyclic ketals
作者:Jong-Gab Jun、Hyun Shun Shin
DOI:10.1016/s0040-4039(00)61321-7
日期:1992.8
6,8-Dioxabicyclo[3.2.1loctanes(1) were readily converted to 2,6 disubstituted pyridine derivatives(2) in one step by treatment with AlCl3,-NH2OH·HCl/AcOH.
Perkin communications. A new method for the preparation of 1,5-dicarbonyl compounds from bicyclic ketals
作者:Jong-Gab Jun、Seigi Suh、Dong Gyun Shin
DOI:10.1039/p19890001349
日期:——
1,5-Dicarbonylcompounds have been prepared frombicyclicketals in high yield under mild conditions by using aluminium chloride–sodium iodide in methylene dichloride.
Jun, Jong-Gab; Shin, Hyun Shun; Kim, Sung Hoon, Journal of the Chemical Society. Perkin transactions I, 1993, # 15, p. 1815 - 1818
作者:Jun, Jong-Gab、Shin, Hyun Shun、Kim, Sung Hoon
DOI:——
日期:——
TRANSKETALIZATION AND REGIOSELECTIVE ALDOL CONDENSATION IN BICYCLIC KETAL SYSTEM
作者:Ae-Ran Kim、In-Suk Lee、Jong-Gab Jun
DOI:10.1081/scc-100103320
日期:2001.1
A convenient one-pot transketalization reaction of bicyclic ketal compound was obtained by using NaI-AcCl in ketone, and a regioselective aldol condensation of bicyclic ketal compound was also made by using NaI-TMSCl in acetonitrile.