Propyl lactate

M-Butyl formate. Ethyl iso-butyrate IsO -butyl acetate Ethyl butyrate -Propyl propionate Iso-amyl formate, -But> l acetate Iso-propyl butyrate Iso-butyl propionate n-Propyl -butyrate -Butyl propionate Iso-butyl isobutyrate Ethyl lactate Iso-butyl butyrate Cycloheicyl formate -Butyl -butyrate Iso-propyl lactate. Cyclohexyl acetate Diethyl oxalate Di-iao-propyl oxalate... 

Lactic acid iso-Propyl alcohol tso-Propyl lactate... 

The purified commercial di-n-butyl d-tartrate, m.p. 22°, may be used. It may be prepared by using the procedure described under i o-propyl lactate (Section 111,102). Place a mixture of 75 g. of d-tartaric acid, 10 g. of Zeo-Karb 225/H, 110 g. (136 ml.) of redistilled n-butyl alcohol and 150 ml. of sodium-dried benzene in a 1-litre three-necked flask equipped with a mercury-sealed stirrer, a double surface condenser and an automatic water separator (see Fig. Ill, 126,1). Reflux the mixture with stirring for 10 hours about 21 ml. of water collect in the water separator. FUter off the ion-exchange resin at the pump and wash it with two 30-40 ml. portions of hot benzene. Wash the combined filtrate and washings with two 75 ml. portions of saturated sodium bicarbonate solution, followed by lOu ml. of water, and dry over anhydrous magnesium sulphate. Remove the benzene by distillation under reduced pressure (water pump) and finally distil the residue. Collect the di-n-butyl d-tartrate at 150°/1 5 mm. The yield is 90 g. 

Phenylhydrazine, 113 /3-Phenylhvdroxylamine, 113 Piperonal, 82 Piperonylic Acid, 82 Prehnitene, 37 iro-Propyl alcohol, 88 -Propyl benzene, 113 1-Propylene Glycol, 84 mo-Propyl Lactate, 88 Pseudodurene, 37 Pykomellitic Acid, go Pyrrole, IT3 Pyruvic acid, 114... 

Jso-propyl lactate has been prepared by heating iso-propyl alcohol and lactic acid in a sealed tube at 1700,1 2 and from silver lactate and iso-propyl iodide, together with the iso-propyl ester of a-iso-propoxy-propionic acid.3 Direct esterification of the acid with the alcohol, with sulfuric acid, has failed to give a yield greater than 20 per cent of the theoretical amount, and the product has been less pure. 

A = 10851 C6H12O3 CeHiaClOa Propyl Lactate Chloroacetal 171.7 157.4 Nonazeotrope 256... 

C.HsCliO propanol l,3-Dichloro-2- 174.5 CsHitOi Propyl lactate 171.7 C7H7C1 a-Chlorotoluene 179.35 Nonazeotrope 248... 

CsHuOi Propyl lactate 171.7 CsIIioO Phene tole 171.5... 

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