Aldehydes Ketones And Carboxylics Flashcards
Prep of RCHO and ROR’ ?(Total 7)
Abbreviation:
Ipo-in presence of
OXIDATION OF ROH
(1) 1° ROH reacts ipo PCC {pyridium
chlorochromate=C5H5N+HCl+CrO3} ➡️RCHO
(2) 2° ROH reacts ipo CrO3 {chronic oxide}➡️RCHO
DEHYDROGENATION OF ROH
(3) 1° ROH reacts with Cu at 576k ➡️RCHO
(4) 2° ROH reacts with Cu at 576k ➡️ ROR'
OXIDATION OF ALKENES
(5) C=C +O3 further reacts with Zn dust ➡️RCHO
{Symmetric alkene}
(6) C-C=C +O3 further reacts with Zn dust ➡️ ROR’
{Asymmetric alkene}
DEHYDRATION OF ALKYNES
(7) Alkynes react with HgSO4 + H2SO4 at 333k
{Symmetric alkynes}➡️RCHO
{Asymmetric Alkynes}➡️ROR’
Prep of RCHO? (Total 8)
Abbreviation:
Mop - method of preparation
(1) ROSENMUMD
RCOCl ipo H+ and pd react on the surface of BaSO4 ➡️RCHO
(2) STEPHEN’S
RCN +SnCl +HCl followed by hydrolysis ➡️ RCHO
(3) BY NITRILES
RCN ipo DIBALH {diisobutylaluminiumhydride} followed by
hydrolysis ➡️RCHO
(4) BY ESTERS
RCOOR' ipo DIBALH {diisobutylaluminiumhydride} followed
by hydrolysis ➡️RCHO
(5) BY CHROMYL CHLORIDE
C6H5CH3 + CrO2Cl2 {chromyl chloride} ipo CS2 {carbon
disulphide} ➡️ INTERMEDIATE on hydrolysis➡️ C6H5CHO
(6) BY CHROMIC OXIDE
C6H5CH3 + (CH3CO)2O {acetic anhydride} ipo CrO3 at
273-278k ➡️ INTERMEDIATE on hydrolysis ➡️ C6H5CHO
(7) SIDE CHAIN CHLORINATION (commercial mop of RCHO)
C6H5CH3 in chlorination ➡️ INTERMEDIATE on hydrolysis at 373k ➡️ C6H5CHO
(8) GATTERMAN KOCH
C6H6 + CO + HCL ipo anhy.AlCl3 ➡️ C6H5CHO
Mop of RCOR’?(Total 3)
(1) RMgX + CdCl2 ➡️ R2Cd + 2RCOCL ➡️ RCOR’
(2) RMgX + RCN ipo ether(ROR’) ➡️ RCOR’
(3) C6H6 + Ar/R- COCL ipo anhy.AlCl3 ➡️ (C6H5)Ar/R
