GB2018243A – Process for the production of thioxanthones
– Google Patents
GB2018243A – Process for the production of thioxanthones
– Google Patents
Process for the production of thioxanthones
Info
Publication number
GB2018243A
GB2018243A
GB7911402A
GB7911402A
GB2018243A
GB 2018243 A
GB2018243 A
GB 2018243A
GB 7911402 A
GB7911402 A
GB 7911402A
GB 7911402 A
GB7911402 A
GB 7911402A
GB 2018243 A
GB2018243 A
GB 2018243A
Authority
GB
United Kingdom
Prior art keywords
thioxanthones
production
metalhydrosulphide
sulphur
employed
Prior art date
1978-04-07
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.)
Granted
Application number
GB7911402A
Other versions
GB2018243B
(en
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.)
Sandoz AG
Original Assignee
Sandoz AG
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.)
1978-04-07
Filing date
1979-04-02
Publication date
1979-10-17
1979-04-02
Application filed by Sandoz AG
filed
Critical
Sandoz AG
1979-10-17
Publication of GB2018243A
publication
Critical
patent/GB2018243A/en
1982-10-20
Application granted
granted
Critical
1982-10-20
Publication of GB2018243B
publication
Critical
patent/GB2018243B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07D—HETEROCYCLIC COMPOUNDS
C07D335/00—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom
C07D335/04—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
C07D335/10—Dibenzothiopyrans; Hydrogenated dibenzothiopyrans
C07D335/12—Thioxanthenes
C07D335/14—Thioxanthenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 9
C07D335/16—Oxygen atoms, e.g. thioxanthones
Abstract
A process for the production of thioxanthones comprises reacting the corresponding o,o’-dihalogen- benzophenone with sulphur or with a metal sulphide or metalhydrosulphide with the proviso that when a metal sulphide or metalhydrosulphide is employed the reaction is carried out in a two-phase system in the presence of a phase transfer catalyst, and when the sulphur is employed the reaction is carried out in alkaline medium.
GB7911402A
1978-04-07
1979-04-02
Process for the production of thioxanthones
Expired
GB2018243B
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
CH377378A
CH635583A5
(en)
1978-04-07
1978-04-07
METHOD FOR PRODUCING OPTIONALLY SUBSTITUTED THIOXANTHONES.
Publications (2)
Publication Number
Publication Date
GB2018243A
true
GB2018243A
(en)
1979-10-17
GB2018243B
GB2018243B
(en)
1982-10-20
Family
ID=4263176
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7911402A
Expired
GB2018243B
(en)
1978-04-07
1979-04-02
Process for the production of thioxanthones
Country Status (8)
Country
Link
JP
(1)
JPS54148791A
(en)
BE
(1)
BE875359R
(en)
CH
(1)
CH635583A5
(en)
DE
(1)
DE2912197A1
(en)
ES
(1)
ES479408A1
(en)
FR
(1)
FR2421898B2
(en)
GB
(1)
GB2018243B
(en)
NL
(1)
NL7902588A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2161482A
(en)
*
1984-07-12
1986-01-15
Sandoz Ltd
Improvements in or relating to organic compounds
CN102863422A
(en)
*
2012-09-07
2013-01-09
浙江工业大学
Preparation method of 2-isopropylthioxanthone
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CH644362A5
(en)
1980-05-06
1984-07-31
Ciba Geigy Ag
3,5-DISUBSTITUTED PHTHALIC ACID IMIDES.
CN108218831B
(en)
*
2018-04-17
2020-07-07
吉林大学
Thioxanthone compound crystal with room-temperature phosphorescence property and preparation method and application thereof
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3767674A
(en)
*
1971-10-01
1973-10-23
Ostra Lakemedel Ab
Cyclohexeno thioxanthones
CH628343A5
(en)
*
1977-03-24
1982-02-26
Sandoz Ag
Process for preparing thioxanthones
1978
1978-04-07
CH
CH377378A
patent/CH635583A5/en
not_active
IP Right Cessation
1979
1979-03-28
DE
DE19792912197
patent/DE2912197A1/en
active
Granted
1979-04-02
GB
GB7911402A
patent/GB2018243B/en
not_active
Expired
1979-04-03
FR
FR7908377A
patent/FR2421898B2/en
not_active
Expired
1979-04-03
NL
NL7902588A
patent/NL7902588A/en
not_active
Application Discontinuation
1979-04-05
JP
JP4042179A
patent/JPS54148791A/en
active
Granted
1979-04-05
BE
BE0/194437A
patent/BE875359R/en
active
1979-04-06
ES
ES479408A
patent/ES479408A1/en
not_active
Expired
Cited By (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2161482A
(en)
*
1984-07-12
1986-01-15
Sandoz Ltd
Improvements in or relating to organic compounds
FR2567516A1
(en)
*
1984-07-12
1986-01-17
Sandoz Sa
PROCESS FOR PREPARING XANTHONES AND THIOXANTHONES AND USE THEREOF AS PHOTOPOLYMERIZATION INITIATORS
US4661595A
(en)
*
1984-07-12
1987-04-28
Sandoz Ltd.
Method for producing xanthone and thioxanthone compounds useful as photoinitiators
CN102863422A
(en)
*
2012-09-07
2013-01-09
浙江工业大学
Preparation method of 2-isopropylthioxanthone
CN102863422B
(en)
*
2012-09-07
2014-06-11
浙江工业大学
Preparation method of 2-isopropylthioxanthone
Also Published As
Publication number
Publication date
JPS54148791A
(en)
1979-11-21
ES479408A1
(en)
1979-12-01
JPH0134993B2
(en)
1989-07-21
GB2018243B
(en)
1982-10-20
DE2912197C2
(en)
1988-12-29
FR2421898B2
(en)
1987-12-24
DE2912197A1
(en)
1979-10-18
FR2421898A2
(en)
1979-11-02
CH635583A5
(en)
1983-04-15
NL7902588A
(en)
1979-10-09
BE875359R
(en)
1979-10-05
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Legal Events
Date
Code
Title
Description
1990-11-28
PCNP
Patent ceased through non-payment of renewal fee
