JPS5782384A - Preparation of dihydrofuran derivative - Google Patents
Preparation of dihydrofuran derivativeInfo
- Publication number
- JPS5782384A JPS5782384A JP15816880A JP15816880A JPS5782384A JP S5782384 A JPS5782384 A JP S5782384A JP 15816880 A JP15816880 A JP 15816880A JP 15816880 A JP15816880 A JP 15816880A JP S5782384 A JPS5782384 A JP S5782384A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- formula
- pref
- earth metal
- alkaline earth
- 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
- Furan Compounds (AREA)
Abstract
PURPOSE: To prepare the titled compound useful as perfumery, in high yield, by reacting an epoxy compound with an alkaline earth metal salt, thereby selectively rearranging the compound without using a strong acid.
CONSTITUTION: The compound of formula II is prepared by reacting 1mol of the compound of formula I(X is -CH2-CH2-, -CH=CH-, -CHOH-CH2-,etc. R is H, 1W 10C alphatic hydrocarbon or aromatic hydrocarbon group) with ≥1mol, pref. 3W 20mol of an alkaline earth metal salt (e.g. magnesium fluoride, magnesium chloride, magnesium bromide, etc.) in a solvent such as pentane, hexane, heptane, benzene, etc., at room temp. W180°C, pref. 20W120°C. The compound of formula I can be converted, in high yield, to the compound of formula II which is unstable to strong acid, by a rearrangement reaction.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15816880A JPS5782384A (en) | 1980-11-12 | 1980-11-12 | Preparation of dihydrofuran derivative |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15816880A JPS5782384A (en) | 1980-11-12 | 1980-11-12 | Preparation of dihydrofuran derivative |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5782384A true JPS5782384A (en) | 1982-05-22 |
Family
ID=15665754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15816880A Pending JPS5782384A (en) | 1980-11-12 | 1980-11-12 | Preparation of dihydrofuran derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5782384A (en) |
-
1980
- 1980-11-12 JP JP15816880A patent/JPS5782384A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
UA27871C2 (en) | DERIVATIVES OF 3,6-DISAMBED-1,2,4,5-TETRAZINE FOR TIME CONTROL, ACARICIDAL COMPOSITION BASED ON THEM, METHOD OF OBTAINING, METHOD | |
JPS574930A (en) | Synthesis of alpha,beta-unsaturated ketone | |
JPS5562043A (en) | Preparation of phenoxycarboxylic acid derivative | |
JPS5782384A (en) | Preparation of dihydrofuran derivative | |
JPS54112873A (en) | Preparation of 2,2,6,6-tetramethyl-4-oxopiperidine | |
JPS5746974A (en) | Alpha- or beta-substituted-gamma-phenylthio-gamma-butyrolactone and its preparation | |
JPS55111430A (en) | Preparation of phenoxyalkene derivative | |
JPS6446A (en) | Production of 4-hydroxy-2-cyclopentenone derivative | |
JPS54117441A (en) | Preparation of 2-hydroxy-2-cycloalken-1-ones and their intermediates | |
AU3368093A (en) | Process for producing prostaglandin E | |
JPS55160740A (en) | Preparation of cyclopentenolone | |
JPS5430128A (en) | Preparation of water impregnated substance of diperisophthalic acid tent-butyl ester | |
JPS55120590A (en) | Preparation of gamma-amino-gamma-carboxypropyl-methylphosphinic acid | |
JPS5634646A (en) | Preparation of phenoxyalkene derivative | |
JPS5592343A (en) | Preparation of optically active substituted isovaleric acid | |
JPS5659727A (en) | Preparation of substituted phenol | |
JPS52125138A (en) | Preparation of aromatice aldehydes | |
JPS5384937A (en) | Preparation of novel aromatic carboxylic acid amide derivatives | |
JPS5634647A (en) | Preparation of phenoxyalkene derivative | |
JPS5587769A (en) | Preparation of pyrroleacetic acid derivative | |
IE39635L (en) | Phosphonate plant growth regulants | |
JPS55120530A (en) | Preparation of 3-phenoxybenzyl alcohol | |
JPS5334750A (en) | Preparation of cyclopentadeca-4-yne-one | |
JPS5377042A (en) | Preparation of optically active organic thiophosphotic acid | |
JPS5350126A (en) | Preparation of hydroquinone derivative |