تفاعل #95548

معادلة التفاعل

potassium bicarbonate

1,3-bis(dimethylphosphono)propan-2-one

dodecan-1,12-dial

→

15-(dimethyphosphono)-pentadec-12-en-14-on-1-al

المذيبات

water

t-butanol

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONwas added
2. 2
   استخلاصthe mixture was extracted with ether
3. 3
   أخرىThe organic layer was separated
4. 4
   غسيلwashed with brine
5. 5
   تجفيفdried over sodium sulphate
6. 6
   أخرىevaporated
7. 7
   أخرىThe residue was chromatographed on 150 g of silica gel
8. 8
   غسيلHexane-ethyl acetate 1:1 eluted 2.68 g of unreacted dodecan-1,12-dial and ether
9. 9
   غسيلeluted
10. 10
    أخرى4.38 g (42%, resp. 75% when based on recovered dial) of the title compound as a viscous oil

الإجراء التجريبي

A solution of 5 g of potassium bicarbonate in 150 ml of water was added to a mixture of 8.22 g (30 mMole) of 1,3-bis(dimethylphosphono)propan-2-one and 5.94 g (80 mMole) of dodecan-1,12-dial in 150 ml of t-butanol. After 21/2 h stirring at 27° under nitrogen water was added and the mixture was extracted with ether. The organic layer was separated, washed with brine, dried over sodium sulphate and evaporated. The residue was chromatographed on 150 g of silica gel. Hexane-ethyl acetate 1:1 eluted 2.68 g of unreacted dodecan-1,12-dial and ether eluted 4.38 g (42%, resp. 75% when based on recovered dial) of the title compound as a viscous oil.

المصدر