KIMIA ORGANIK
catatan
·
Reaksi alkena
dengan hidrogen
R
CH3−CH2−CH= CH2 + H2 → CH2-CH2-CH2-CH3
1-butena Katalis butena
Pd/ni
R
CH2 = CH2 + H → CH3-CH3
Katalis
Pd/ni
·
Contoh lain
tahap 1
CH3−CH2-CH2
┼CH−CH2−CH3
|
CH3
Diputus atau dipotong
Tahap 2
CH3−CH2-CH2┼CH−CH2−CH3
|
CH3
Disusun menjadi
CH3 – CH – CH2−CH3
Posisi
CH3 sebelum nya di masukkan alkil halida
Menjadi
CH3 – CH – CH2−CH3
|
Br
Selanjutnya………
Li CuBr
CH3 – CH – CH2−CH3 → CH3-CH-CH2-CH3 →
|
|
Br
Li
CH3 CH3
− CH−CH2−CH3
| |
CH −−−− CuLi −−−− |
| |
CH2 |
| |
CH3 |
|→ CH3−CH−CH2−CH3
| |
| CH2−CH2−CH3
|
|
|
CH3-CH2-CH2Br−−−− |