| 摘要 |
<p>1317818 Dipropylcyclopropene carbonyl chloride EASTMAN KODAK CO 4 June 1970 [6 June 1969] 26975/70 Heading C2C [Also in Divisions C3 and G2] In Example 10, 1,2-di-n-propylcyclopropene- 3-carbonyl chloride is produced by reacting ethyl diazoacetate with 4-octyne in the presence of copper dust and hydrolysing the product of this reaction and then acidifying and reacting with oxalyl chloride to obtain the above compound. The ethyl diazoacetate is obtained by diazotization of ethyl glycinate NH 2 CH 2 COOC 2 H 5 with NaNO 2 .</p> |
