Abstract
AbstractThe synthesis is described of a number of N‐substituted 2‐amino‐5,8‐dimethoxychromones (1) by replacement of the sulphoxide group in 2‐ethylsulphinyl‐5,8‐dimethoxychromone (5a) with the appropriate amine. Analogous substitution of 2‐ethylsulphonyl‐5,8‐dimethoxychromone (5b) is also possible but limited by the instability of the sulphone. Replacement reactions of 5a involving oxygen, sulphur, and phosphorus nucleophiles are also described.
References
36
Referenced
40
10.1002/9780470187012
10.1246/bcsj.35.1869
{'key': 'e_1_2_1_3_3', 'first-page': '874', 'volume': '96', 'author': 'Cecchi S.', 'year': '1966', 'journal-title': 'Gazz. Chim. Ital.'}
/ Gazz. Chim. Ital. by Cecchi S. (1966)- (c)R. E.BrownandD. M.Lustgarten U. S. Patent 3 932 466 (1976)
{'key': 'e_1_2_1_3_5', 'first-page': '2283', 'volume': '51', 'author': 'Jermanowska Z.', 'year': '1977', 'journal-title': 'Rocz. Chem.'}
/ Rocz. Chem. by Jermanowska Z. (1977)10.1248/cpb.24.644
10.1002/ardp.19723050912
{'key': 'e_1_2_1_6_2', 'first-page': '143', 'volume': '2', 'author': 'Glozman S. M.', 'year': '1970', 'journal-title': 'Khim. Geterotsikl. Soedin.'}
/ Khim. Geterotsikl. Soedin. by Glozman S. M. (1970){'key': 'e_1_2_1_6_3', 'first-page': '114184h', 'volume': '77', 'year': '1972', 'journal-title': 'Chem. Abstr.'}
/ Chem. Abstr. (1972){'key': 'e_1_2_1_7_2', 'first-page': '171', 'volume': '2', 'author': 'Zagorevskii V. A.', 'year': '1970', 'journal-title': 'Khim. Geterotsikl. Soedin.'}
/ Khim. Geterotsikl. Soedin. by Zagorevskii V. A. (1970){'key': 'e_1_2_1_7_3', 'first-page': '87288m', 'volume': '77', 'year': '1972', 'journal-title': 'Chem. Abstr.'}
/ Chem. Abstr. (1972)- U.PetersonandH.Heitzer Ann. Chem. 1659(1976)
10.1021/jo01298a042
{'key': 'e_1_2_1_9_2', 'first-page': '269', 'volume': '101', 'author': 'Ermili A.', 'year': '1971', 'journal-title': 'Gazz. Chim. Itai'}
/ Gazz. Chim. Itai by Ermili A. (1971){'key': 'e_1_2_1_9_3', 'first-page': '713', 'volume': '32', 'author': 'Ermili A.', 'year': '1977', 'journal-title': 'Gazz. Chim. Itai'}
/ Gazz. Chim. Itai by Ermili A. (1977)10.1002/jhet.5570120604
{'key': 'e_1_2_1_10_2', 'first-page': '2819', 'volume': '250', 'author': 'Levas M.', 'year': '1960', 'journal-title': 'C. R. Acad. Sci., Ser. C'}
/ C. R. Acad. Sci., Ser. C by Levas M. (1960)10.1002/ardp.19723050911
{'key': 'e_1_2_1_12_2', 'first-page': '193', 'volume': '3', 'author': 'Le Corrc M.', 'year': '1968', 'journal-title': 'Ann. Chim. (Paris)'}
/ Ann. Chim. (Paris) by Le Corrc M. (1968)-
G. P.EllisandI. L.Thomas J. Chem. Soc Perkin Trans. I 2570(1974).
(
10.1039/p19740002570
) 10.1002/jhet.5570150416
{'key': 'e_1_2_1_15_2', 'volume-title': 'Advances in Heterocyclic Chemistry', 'author': 'Shepherd R. G.', 'year': '1965'}
/ Advances in Heterocyclic Chemistry by Shepherd R. G. (1965)-
(b)G. B.BarlinandW. V.Brown J. Chem. Soc. C 2473(1967).
(
10.1039/j39670002473
) -
G. B.BarlinandW. V.Brown J. Chem. Soc. B 1435(1968)
(
10.1039/j29680001435
) 10.1002/cber.19781110321
-
F. M.Dean D. B.Frankham NatiqHatamandA. W.Hill J. Chem. Soc. C 218(1971).
(
10.1039/j39710000218
) 10.1016/S0040-4020(01)93857-8
- The pKa of 1c was 2.9 as measured spectrophotometrically.
10.1248/yakushi1947.96.7_841
/ Yakugaku Zasshi by Komiya T. (1976){'key': 'e_1_2_1_20_3', 'first-page': '89536a', 'volume': '86', 'year': '1977', 'journal-title': 'Chem. Abstr.'}
/ Chem. Abstr. (1977)10.3987/R-1977-09-1581
-
(c)E. K.AdesoganandA. L.Okunade J. Chem. Soc. Chem. Commun. 152(1978).
(
10.1039/c39780000152
) - See for example R. B.King J. C.CloydandP. N.Kapoor J. Chem. Soc. Perkin Trans. I 2226(1973).
{'key': 'e_1_2_1_22_2', 'first-page': '483', 'volume': '26', 'author': 'Cieslak J.', 'year': '1952', 'journal-title': 'Rocz. Chem.'}
/ Rocz. Chem. by Cieslak J. (1952)10.1139/v78-292
10.1021/jo00807a028
Dates
Type | When |
---|---|
Created | 16 years, 5 months ago (March 11, 2009, 8:47 p.m.) |
Deposited | 1 year, 9 months ago (Nov. 6, 2023, 10:25 a.m.) |
Indexed | 5 days, 18 hours ago (Aug. 23, 2025, 9:12 p.m.) |
Issued | 44 years, 2 months ago (June 1, 1981) |
Published | 44 years, 2 months ago (June 1, 1981) |
Published Online | 16 years, 5 months ago (March 11, 2009) |
Published Print | 44 years, 2 months ago (June 1, 1981) |
@article{Bantick_1981, title={Synthesis of 2‐aminochromones. Studies on the nucleophilic displacement of sulphinyl and sulphonyl groups in the 2‐position of 5,8‐dimethoxychromone}, volume={18}, ISSN={1943-5193}, url={http://dx.doi.org/10.1002/jhet.5570180407}, DOI={10.1002/jhet.5570180407}, number={4}, journal={Journal of Heterocyclic Chemistry}, publisher={Wiley}, author={Bantick, J. R. and Suschitzky, J. L.}, year={1981}, month=jun, pages={679–684} }