38237-34-2

Upstream product

• 104857-59-2 Trifluoro-acetic acid 1,1-dimethyl-4-(2-methyl-[1,3]dioxolan-2-yl)-butyl ester 
• 29021-98-5 3-(2-methyl-[1,3]dioxolan-2-yl)-propan-1-ol 

Downstream Products

• 143733-92-0 (4R)-2-(4-Hydroxy-4-methyl-5-((2S)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyloxy)pentyl)-2-methyl-1,3-dioxolane 
• 143733-91-9 (4S)-2-(4-Hydroxy-4-methyl-5-((2S)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyloxy)pentyl)-2-methyl-1,3-dioxolane 
• 77878-52-5 1(Benzyloxy)-2-methyl-6-oxoheptane 
• 90432-92-1 2-(5-Benzyloxy-4-methyl-pentyl)-2-methyl-[1,3]dioxolane 
• 77878-07-0 ((E)-8-Chloro-2,6-dimethyl-oct-6-enyloxymethyl)-benzene 
• 77878-62-7 (1RS,4RS,5SR)-4-<5-(Benzyloxy)-4-methylpentyl>-1-methoxy-4-methyl-3,8-dioxabicyclo<3.2.1>octane 
• 77878-41-2 7-Benzyloxy-2-(2-bromomethyl-2-hydroxy-tetrahydrofuran-5-yl)6-methyl-heptan-2-ol 
• 77878-39-8 11-benzyloxy-1-bromo-6,10-dimethyl-5,6-epoxy-undecan-2-one 
• 77878-43-4 7-benzyloxy-2-[2-bromomethyl-2-methoxy-tetrahydrofuran-5-yl]-6-methyl-heptan-2-ol 
• 77878-32-1 11-benzyloxy-6,10-dimethyl-2-trimethylsiloxy-undec-1,5-diene 
• 77878-09-2 11-(benzyloxy)-1-bromo-6,10-dimethyl-2-oxoundec-5-ene 
• 67441-54-7 (1RS,4SR,5RS)-4-(5-hydroxy-4,8-dimethyl-7-nonen-1-yl)-4-methyl-3,8-dioxabicyclo<3.2.1>octane-1-acetic acid 
• 77878-55-8 (E)-2-Acetyl-10-benzyloxy-5,9-dimethyl-dec-4-enoic acid ethyl ester 
• 77878-12-7 8-(benzyloxy)-3,7-dimethyl-2-octenol 

Relevant academic research and scientific papers

SYNTHESIS OF THE PHEROMONES, (E)-3,7-DIMETHYL-2,7-OCTADIENYL PROPIONATE, (E)-3,7-DIMETHYL-2-OCTENE-1,8-DIOL AND FRONTALIN FROM A COMMON INTERMEDIATE

Ketal ester 9 has been prepared in five steps from methyl levulinate 4 (scheme 1).The propionate 1, diol 2 and (+/-) frontalin 3 were prepared from ester 9 employing the routes shown in scheme 2,3 and 4 respectively.The branched chain alkenes 13 and 20 were prepared conveniently from the primary alcohols 11 and 10 following the procedure of S.Wolff.Triethyl phosphonopropionate 7 has been prepared by methylating triethylphosphonoacetate with methyl iodide in the presence of sodium hydride.

OZONOLYSIS OF ALKENES AND REACTIONS OF POLYFUNCTIONAL COMPOUNDS. XXXII. SYNTHESIS OF (ξ)-3,7-DIMETHYL-2,7-OCTADIENYL PROPIONATE

3,7-Dimethyl-2,7-octadien-1-ol (with the E and Z isomers in a ratio of 85:15) was obtained by the ozonolysis of 1-methyl-1-cyclopentene and subsiquent selective transformation of the 1,1-dimethoxy-5-oxohexane, including ethoxycarbonylolefination and methylenation of the carbonyl groups and reduction of the ester group.The propionate of the product is a component of the sex pheromone of the San Jose scale insect.

A SIMPLE METHOD OF ISOMERIZATION OF THE TERMINAL DOUBLE BOND IN A TERPENE CHAIN

The utilisability of the isomerization of the terminal double bond in terpenic compounds with trifluoroacetic acid was investigated.The results obtained were used in the synthesis of the main part of the pheromone of Quadraspidiotus perniciosus COMSTOCK, i.e. (2E)-3,7-dimethyl-2,7-octadien-1-yl propionate.