GB1269595A - Preparation of unsaturated compounds by xanthate decomposition - Google Patents
Preparation of unsaturated compounds by xanthate decompositionInfo
- Publication number
- GB1269595A GB1269595A GB4106570A GB4106570A GB1269595A GB 1269595 A GB1269595 A GB 1269595A GB 4106570 A GB4106570 A GB 4106570A GB 4106570 A GB4106570 A GB 4106570A GB 1269595 A GB1269595 A GB 1269595A
- Authority
- GB
- United Kingdom
- Prior art keywords
- xanthate
- cholesterol
- propyl
- preparation
- complex
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B33/00—Preparation of derivatives of amylose
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/36—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon by splitting of esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C329/00—Thiocarbonic acids; Halides, esters or anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/02—Esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B9/00—Cellulose xanthate; Viscose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Steroid Compounds (AREA)
Abstract
1,269,595. Xanthate esters and unsaturated compounds produced therefrom. TEE PAK Inc. 26 Aug., 1970 [10 Sept., 1969 (2)], No. 41065/70. Headings C2C and C2U. [Also in Divisions C3 and C5] Unsaturated compounds are prepared from a xanthate ester of the formula where R is an alkyl function having at least one H in a position alpha to the R-O bond, (C) n is a linear alkylene function either substituted or unsubstituted, with n = 1 to 3, X has a basicity greater than the = C = S function and comprises a C or S containing functional group having at least one double or triple bond to a hetero atom, the functional group being connected to (C) n through C or S; by heating said ester in water or a protonated non-aqueous solvent or by forming a derivative complex of the formula where A is a Lewis acid, and treating the complex with water or an active hydrogen containing solvent to decompose the complex, thereby producing an unsaturated derivative of R. Examples described the preparation of delta 3,5-cholestaldienes from S-cyanoethyl cholesterol xanthate and from S-(acetaldehyde dimethyl acetal) cholesterol xanthate. The preparation of the xanthate ester starting materials is described from the corresponding sodium salt of the xanthate and include xanthates of S-(3- propane sulphonate)-2-propyl-; S-methyl-2- propyl-, S - carboxymethyl - 2 - propyl-, S- cyanoethylcyclohexyl-, S - cyanoethyl cholesterol and S-(acetaldehyde dimethylacetal) cholesterol.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85682169A | 1969-09-10 | 1969-09-10 | |
US85681369A | 1969-09-10 | 1969-09-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1269595A true GB1269595A (en) | 1972-04-06 |
Family
ID=27127378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4106570A Expired GB1269595A (en) | 1969-09-10 | 1970-08-26 | Preparation of unsaturated compounds by xanthate decomposition |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4843322B1 (en) |
DE (1) | DE2044854C3 (en) |
FR (1) | FR2061228A5 (en) |
GB (1) | GB1269595A (en) |
NL (1) | NL7013213A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5898229U (en) * | 1981-12-25 | 1983-07-04 | 日野自動車株式会社 | transfer cooling system |
JPS61235219A (en) * | 1985-04-12 | 1986-10-20 | Yanmar Diesel Engine Co Ltd | Main clutch cooling device for farm tractor |
SE451008B (en) * | 1985-12-03 | 1987-08-24 | Sab Nife Ab | SPRING BRAKE ACTUATOR FOR A BRAKE UNIT |
-
1970
- 1970-08-26 GB GB4106570A patent/GB1269595A/en not_active Expired
- 1970-09-07 NL NL7013213A patent/NL7013213A/xx unknown
- 1970-09-10 JP JP8584470A patent/JPS4843322B1/ja active Pending
- 1970-09-10 FR FR7032870A patent/FR2061228A5/fr not_active Expired
- 1970-09-10 DE DE19702044854 patent/DE2044854C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2044854B2 (en) | 1974-05-09 |
DE2044854A1 (en) | 1971-05-06 |
NL7013213A (en) | 1971-03-12 |
FR2061228A5 (en) | 1971-06-18 |
DE2044854C3 (en) | 1975-01-09 |
JPS4843322B1 (en) | 1973-12-18 |
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