JPS5455570A - Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyran - Google Patents
Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyranInfo
- Publication number
- JPS5455570A JPS5455570A JP12074377A JP12074377A JPS5455570A JP S5455570 A JPS5455570 A JP S5455570A JP 12074377 A JP12074377 A JP 12074377A JP 12074377 A JP12074377 A JP 12074377A JP S5455570 A JPS5455570 A JP S5455570A
- Authority
- JP
- Japan
- Prior art keywords
- methyltetrahydropyran
- formula
- propenyl
- methyl
- novel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Pyrane Compounds (AREA)
Abstract
PURPOSE: Pure (-)-cis-2-(2-methyl-1-propenyl)-4-methyltetrahydropyran and other optical isomers which are used as perfume are prepared by the oxidation of novel 2-hydroxymethyl-4-methyltetrahydropyran and the subsequent Wittig's reaction.
CONSTITUTION: The oxidation of novel 2-hydroxymethyl-4-methyltetrahydropyran of formula I gives the aldehyde of formula II and the Wittig's reaction between the resulting aldehyde and a compound of formual III is conducted to form objective 2-(2'-methyl-1'-propenyl)-4-methyltetrahydropyran of formula IV. Especially when (+) or (-) cis or trans isomer is usd as the starting material four kinds of pure optical isomers are obtained separately. The novel starting material of formula I is readily prepared from 1, 6;2, 3-dianhydro-4-deoxy-β-D-hexopyranose
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12074377A JPS5455570A (en) | 1977-10-07 | 1977-10-07 | Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyran |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12074377A JPS5455570A (en) | 1977-10-07 | 1977-10-07 | Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyran |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5455570A true JPS5455570A (en) | 1979-05-02 |
Family
ID=14793877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12074377A Pending JPS5455570A (en) | 1977-10-07 | 1977-10-07 | Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyran |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5455570A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4340544A (en) * | 1979-06-19 | 1982-07-20 | Sumitomo Chemical Company, Limited | Process for producing 2-(2'-methyl-1'-propenyl)-4-methyltetrahydropyran |
-
1977
- 1977-10-07 JP JP12074377A patent/JPS5455570A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4340544A (en) * | 1979-06-19 | 1982-07-20 | Sumitomo Chemical Company, Limited | Process for producing 2-(2'-methyl-1'-propenyl)-4-methyltetrahydropyran |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5455570A (en) | Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyran | |
JPS57134428A (en) | Production of alpha or beta-irone or its intermediate | |
JPS53149952A (en) | Preparation of cyclopentenones | |
JPS55139330A (en) | Camphoren derivative,perfume composition containing said derivative, and preparation of said derivative | |
JPS56113775A (en) | Dihydropyran derivative, its preparation and utilization | |
JPS5269880A (en) | Producing emulsified liquid of hindered esters | |
JPS5543053A (en) | Preparation of optically active gamma-hydroxyundecanoic acid | |
JPS5219642A (en) | Preparation of 2-hydroxy-4-(2,7- alkadienyloxy)-benzophenones | |
JPS5439043A (en) | Preparation of phenylalkane carboxylic acids | |
JPS5424875A (en) | Preparation of pyrrone derivatives | |
JPS5430144A (en) | Preparation of isocamphane | |
JPS5334750A (en) | Preparation of cyclopentadeca-4-yne-one | |
JPS5253839A (en) | Preparation of 2-(2,2-dihalovinyl) cyclopropane crboxylic acids | |
JPS5414925A (en) | Preparation of epoxy compounds | |
JPS52111509A (en) | Preparation of unsaturated compounds | |
JPS5242849A (en) | Process for preparation of 2-alkylcyclopentadienylethanol | |
JPS57183728A (en) | Preparation of methyl-norbornene derivative | |
JPS53132544A (en) | Preparation of optically active 2alpha-carboxymethyl-3beta-benzyloxymethylcyclopentane-1alpha, 4alpha-diol | |
JPS5363345A (en) | Preparation of 2-(substituted aryl)-propionic acid | |
JPS53130618A (en) | Preparation of 2,4,6,8 tetramethyldecanoic acid or its ester | |
JPS52131506A (en) | Separation of citronellol | |
JPS5432450A (en) | Preparation of 2-n-pentylcyclopentanone derivative | |
JPS5295678A (en) | Preparation of 2-carboxy-1, 9-anthrapyrimidine | |
JPS5328157A (en) | Preparation of 3-(17beta-hydroxyandrost-4-ene-3-one-17alpha-yl)propiolactone | |
JPS5271430A (en) | Preparation of alkylphenylsulfide |