公开(公告)号：US07615672B2

公开(公告)日：2009-11-10

申请号：US11883155

申请日：2005-06-23

Applicant: Kumaran Ganesan ,  Ramesh Chandra Malhotra ,  Ambati Narasimha Rao ,  Pradeep Kumar Gupta ,  Asheesh Kumar Jain ,  Shri Prakash ,  Krishnamurthy Sekhar

Inventor： Kumaran Ganesan ,  Ramesh Chandra Malhotra ,  Ambati Narasimha Rao ,  Pradeep Kumar Gupta ,  Asheesh Kumar Jain ,  Shri Prakash ,  Krishnamurthy Sekhar

IPC: C07C1/207

CPC classification number: C07C1/22 ,  C07C45/68 ,  C07C9/22 ,  C07C49/04

Abstract: A process for the preparation of n-heneicosane is disclosed. The process comprises (a) reacting 2,4-alkaneanedione with 1-bromooctadecane in absolute ethanol in the presence of 18-crown-6 as catalyst to produce 2-heneicosanone; and (b) reducing said 2-heneicosanone using hydrazine hydrate and potassium hydroxide in ethylene glycol to obtain n-heneicosane.

Abstract translation: 公开了制备正二硅烷的方法。 该方法包括（a）在18-冠醚-6作为催化剂的存在下，将2,4-烷二酮与1-溴十八烷在无水乙醇中反应生成2-乙烯酮; 和（b）使用水合肼和氢氧化钾在乙二醇中还原所述2-己烯酮以获得正二十二烷。