Organic chemistry

1899 Journal of the Chemical Society Abstracts  
Compt. vend., 1899,128,303-304) .-Under atmospheric pressure and a t -SO", acetone dissolves more than 2000 times its volume of acetylene. Explosion does not occur on immersing in the solution a platinum mire heated to redness by an electric current, although Berthelot and Vieille have stated that a similar cause readily brings about a n explosion in the case of a solution of the gas prepared a t the ordinary temperature under a pressure of 20 atmospheres. Liquid acetylene a t -SOo, under a
more » ... t -SOo, under a pressure of 1.3 atmospheres, is not exploded by a heated wire, so that under these conditions the gas can be liquefied without danger. Compt. rend., 1899, 128, 333--339).-The potassium salt of the acid derived from the action of sulphuric acid on acetylene, previously described (this vol., i, 264), has the composition 3C2H"4KHS0,. Ordinary sulphuric acid absorbs only a small quantity of acetylene, but the product yields a minute quantity of phenol when heated wit.h potassium hydroxide at 250' . A similar result is obtained when the fuming acid acts on aldehyde or paraldehyde. Acetylene hydrate is formed in verysmall quantity when the gas is absorbed by fuming sulphuric acid, but the yield is larger with the ordinary acid and still larger with the acid H,SO, + H20. If the product from the monohydrate is diluted with water and distilled, i t yields crotonaldehyde mixed with either ethylenic glycol or " vinylic a l c~h o l .~' When the distillate is treated with silver oxide and the insoluble products containing excess of silver oxide are treated with hydrogen sulphide, a tliio-acid, most probably thioglycollic or t hiohydroxyglycollic acid, is formed. Action of Chlorine on C h l o r o f o r m and Bromine on Bromoform in Presence of the C o r r e s p o n d i n g Aluminium Halogen Salts. By A. MOUNEYRAT (BuZZ.Soc.CT~irn., lSYS, 19, [ iii], 179-lSO).-
doi:10.1039/ca8997600397 fatcat:3oc7absoszbxpk24tdsfoaxvnu