and mam in last questn what u do..... ( oxidation of allylic methylene group to carbonyl group).. this is also done by( collins reagent &sarrett reagent) also
@karankhan94413 жыл бұрын
mam.. please do a video on ( PFC)pyridinioum fluoro chromate & (PBC) pyridinioum bromo chromate
@karankhan94413 жыл бұрын
and also mam.. it is not like that allways.... pcc convert (primary alcohol ) to aldehyde....bcz the reagent PCC is totally depends up on the solvents. means wheather we use the H20 solible solvent(DMF,DMSO,DMA) or H20 slightly solilble solvent... (DCM,acetone,Freon 20) etc...... so if we use the water slightly solible salt.. like(DCM) then it convert primary alcohol to "aldehyde" only.... but when we use H20 solible solvent(DMF,DMSO) like this type... then it form (aldehyde hydrate) & then over oxidation to form Carboxylic acid... but not all the case it dont form Aldehyde only
@karankhan94413 жыл бұрын
mam... PCC is more acidic in nature.. so it is deprotect the acid sensitive group... so it will deprotect the acid sensitive group(TBDMS/TBS) group present in the questn.1 so why u do not deprotect that group???? & if u used buffer( NAOAC,Na2co3,Al2o3,sio2,NH4CL.2H20... etc then it cant react with the acid sensitive group.. but u dont write that
@karankhan94413 жыл бұрын
and mam... wht u tell... in tertiary allylic alcohol.. ( 1,3 oxidative rearrangement is take place) "babler oxidation.... same thing is happen in ( allylic secondary alcohol) means here also.. 1,3 oxidative rearrangement is takes place.... but in this u take ( pcc/sio2).... if u take this.. so the result is same.. as in the babler oxidation ..... but the diff. is that ( in babler u take tert. allylic alcohol & here u take secondary allylic alcohol) but the ptoduct are same