69371-63-7

Basic information

• Product Name: 5-Octen-7-yn-2-one, (E)- (9CI)
• Synonyms: 5-Octen-7-yn-2-one, (E)- (9CI)
• CAS NO: 69371-63-7
• Molecular Formula: C8H10O
• Molecular Weight: 122.1644
• Product Categories: ACETYLGROUP
• Mol File: 69371-63-7.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 5-Octen-7-yn-2-one, (E)- (9CI)(CAS DataBase Reference)
• NIST Chemistry Reference: 5-Octen-7-yn-2-one, (E)- (9CI)(69371-63-7)
• EPA Substance Registry System: 5-Octen-7-yn-2-one, (E)- (9CI)(69371-63-7)

Safety Data

• Hazardous Substances Data: 69371-63-7(Hazardous Substances Data)

Upstream product

• 1007476-32-5 sodium ethyl acetylacetate enolate 
• 21613-37-6 5-chloro-pent-3t-en-1-yne 

Relevant articles and documents

Method of preparing C-18 ketones used in the manufacture of Vitamins E and K

Methods of forming unsaturated C-18 ketones which can be used in the synthesis of Vitamins E and K1 are disclosed. One procedure involves coupling a C-9 primary allylic halide to a carbonyl-group-containing C-9 terminal alkyne. A second, two-step procedure employs a C-4 bis allylic halide (molar excess) and a carbonyl-group-containing C-9 terminal alkyne to form a C-13 primary allylic halide. The C-13 primary allylic halide can then be converted to the desired C-18 ketone by reaction with 2-methyl-3-butyn-2-ol. Novel C-18 ketones (e.g., 14-hydroxy-6,14-dimethyl-10-methylene-5-pentadecen-7,12-diyn-2-one), C-13 allylic halides (e.g., 10-chloromethyl-6-methyl-5,10-undecadien-7-yn-2-one) and C-9 allylic halides (e.g., 6-chloromethyl-2-methyl-6-hepten-3-yn-2-ol) are formed in the process.