ES399221A1 - Preparation of substituted chromenols - Google Patents
Preparation of substituted chromenolsInfo
- Publication number
- ES399221A1 ES399221A1 ES399221A ES399221A ES399221A1 ES 399221 A1 ES399221 A1 ES 399221A1 ES 399221 A ES399221 A ES 399221A ES 399221 A ES399221 A ES 399221A ES 399221 A1 ES399221 A1 ES 399221A1
- Authority
- ES
- Spain
- Prior art keywords
- formula
- group
- preparation
- carbon atoms
- chromenols
- 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
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
A procedure for the preparation of a chromenol of formula (I): ** (See formula) ** or a salt thereof, where R1 is a hydrocarbon group of 1 to 20 carbon atoms, R2 is a six-membered heterocyclic group with a nitrogen atom in position 4, R3 is an alkyl group of 1 to 6 carbon atoms and Y is a hydrogen atom, a salt ion, or an ester or ether forming group; whose procedure is to react a coumarin of formula (II): ** (See formula) ** with an alkyllithium compound of formula R3Li and then, if desired, substituting group Y for other groups Y by known methods. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB335471 | 1971-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES399221A1 true ES399221A1 (en) | 1974-11-16 |
Family
ID=9756735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES399221A Expired ES399221A1 (en) | 1971-01-28 | 1972-01-26 | Preparation of substituted chromenols |
Country Status (4)
Country | Link |
---|---|
CA (1) | CA981682A (en) |
CH (1) | CH577501A5 (en) |
ES (1) | ES399221A1 (en) |
GB (1) | GB1340531A (en) |
-
1971
- 1971-01-28 GB GB1340531D patent/GB1340531A/en not_active Expired
- 1971-12-30 CA CA131,429A patent/CA981682A/en not_active Expired
-
1972
- 1972-01-20 CH CH85872A patent/CH577501A5/xx not_active IP Right Cessation
- 1972-01-26 ES ES399221A patent/ES399221A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH577501A5 (en) | 1976-07-15 |
GB1340531A (en) | 1973-12-12 |
CA981682A (en) | 1976-01-13 |
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