2-Phenyloxazolo[4,5-b]pyridines 1 and -[5,4-b]pyridines 4 were functionalized at the 7-position with various electrophiles in good yield. The secondary alcohols 3a,b and 6a,b were oxidized to the corresponding ketones 7a,b and 8a,b with manganese dioxide in high yield.
2-苯氧杂唑[4,5-b]
吡啶1和-[5,4-b]
吡啶4在7位位置与各种电正性试剂进行了官能团化,产率良好。二级醇3a,b和6a,b在高产率下用
二氧化锰氧化为相应的酮7a,b和8a,b。