128926-27-2

Upstream product

• 128926-23-8 4-(8-Hydroxy-7,9,9-trimethyl-1,4-dioxaspiro<4.5>dec-6-en-8-yl)-3-oxobutansaeure-ethylester 
• 14203-64-6 7,9,9-trimethyl-1,4-dioxa-spiro[4.5]dec-6-en-8-one 

Downstream Products

• 128926-31-8 <(8E)-2,2,6-Trimethyl-4-oxo-7-oxabicyclo<4.3.0>non-9-en-8-yliden>essigsaeureethylester 
• 128926-17-0 3,5,5-Trimethyl-(E)-4-(2-oxopropyliden)-2-cyclohexen-1-on 
• 128926-39-6 3,5,5-Trimethyl-(Z)-4-(2-oxopropyliden)-2-cyclohexen-1-on 

Relevant academic research and scientific papers

Structure-Odor Correlation, XIII. - Synthesis and Olfactive Properties of Megastigmatrienone Analogues

The key compound 9 was readily prepared in larger quantities by an improvement of a known procedure.Addition of carbanions to the unprotected ketone 9 gives the hydroxy ketones 16 - 21 via the acetals 10 - 15.Dehydration of 16 - 20 furnishes the dienones