Important Sequences of Organic Chemistry

Important Sequences of Organic Chemistry

1. Acidic Strength -
 
H2SO4 >H2CO3>  RCOOH > Phenol > CH3OH > H2O > ROH > Terminal Alkynes > NH3 >Alkene > Alkane > H2
 
2. Strength of Conjugate Base -
 
HSO4-- < RCOO - < C6H5O - < OH - < RO - < NH2 -
 
3. Leaving Group Tendency-
 
HSO4 - > RCOO - > C6H5O - > OH - > RO - > NH2 -
 
4. Lewis Pi-Base Nature -
 
 
CH2 = CH2 < CH3 -CH=CH2 < CH3- CH=CH -CH3 < (CH3)2 -C=CH -CH3 < (CH3)2 - C=C -(CH3)2
 
5. Rate of Electrophilic Addition -
 
CH2 = CH2 < CH3 -CH=CH2 < CH3- CH=CH -CH3 < (CH3)2 -C=CH -CH3 < (CH3)2 - C=C -(CH3)2
 
 
CH2=CH2 > CH2 =CH -I > CH2=CH-Br > CH2= CH -Cl
 
 
CH2=CH2 > CH2 =CH-Cl > CH2 =CH(Cl)2 > (Cl)2 C=C (Cl)2
 
6. Bond Energy -
 
C- F > C-H > C-Cl > C-Br> C -I
 
 
H-F > H-Cl > H- Br >H-I
 
 
7. Acidic Nature-
 
HI > HBr > HCl > HF
 
8. Oxidising Nature -
 
F2 > Cl2 >Br2 > I2
 
 
9. Ease of Oxidation be SeO2 of -
 
-CH2 > -CH3 >-CH
 
10. Stability order-
 
Conjugated Dienes > Isolated Dienes > Alkynes > Allenes
 
11. Rate of reduction -
 
R-I > R-Br > R-Cl >>>> R-F
 
H-I > H-Br > H-Cl > H-F
 
 
12. Strength Of Nucleophiles -
 
SH - > CN - > I - > OH - > N3 - > Br - > PhO - > CH3COO - >Cl - > F - > NO3 - > H2O
 
13. Basisity-
 
 
H2O < OH -
 
ROH < R-O -
 
CH3COOH < CH3COO -
 
NH3 < NH2 - < NH2- < N3-
 
SH - >Cl -
 
F - > Cl- > Br - >I -
 
NH3 > NH2- NH2 >NH2 OH
 
 
14. Nucleophilicity-
 
H2O < OH-
 
ROH < R-O -
 
CH3COOH < CH3COO -
 
NH3 < NH2 - < NH2- < N3-
 
CH4 <<<< CH3 -
 
CH3 - > NH2 - >OH - > F-
 
SH - > Cl -
 
(In protic Solvents), F - > Cl - >  Br - > I -
 
(In Aprotic Solvents), F - < Cl - <  Br -  < I -
 
NH3 < NH2 -NH2 < NH2-OH
 
 
 
15. Rate of SN2 Reaction-
 
CH3OH > CH3CH2 OH> CH3CH2CH2OH> CH3 CH2 CH2CH2 OH
 
CH3OH > CH3CH2 OH > (CH3)2 CHOH > (CH3)3 C-OH
 
In general,
 
CH3- >  10 >20 > 30
 
16. Rate of SN1 Reaction-
 
30 > 20 >10 > CH3-
 
17. Density-
 
 R-F < R-Cl < H2O < R-Br < R -I
 
CH4 < CH3Cl < CH2Cl2 <CHCl3 < CCl4
 
18. Dipole Moment-
 
H-F > H-Cl > H-Br > H-I
 
CH3Cl > CH3 -F > CH3- Br > CH3 -I
 
CH3Cl >CH2Cl2 > CHCl3 > CCl4 = CH4
 
19. Trend in boiling point of Alkyl Halides -
 
R-I > R-Br > R-Cl > R-F
 
H-F > H-I > H-Br > H-Cl

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