JPS5455570A - Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyran - Google Patents

Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyran

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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
Application number
JP12074377A
Other languages
Japanese (ja)
Inventor
Masanao Matsui
Tomoya Ogawa
Nobuo Kosaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Chemical Co Ltd
Priority to JP12074377A priority Critical patent/JPS5455570A/en
Publication of JPS5455570A publication Critical patent/JPS5455570A/en
Pending legal-status Critical Current

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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
JP12074377A 1977-10-07 1977-10-07 Preparation of 2-(2-methyl-1-propenyl)-4- methyltetrahydropyran Pending JPS5455570A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

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