ORGANOSULFUR PHOSPHORUS-ACID COMPOUNDS .4. FLUOROBENZYLPHOSPHONO-SULFONIC ACIDS

Authors
MONTONERI E SAVARINO P VISCARDI G GALLAZZI MC
Citation
E. Montoneri et al., ORGANOSULFUR PHOSPHORUS-ACID COMPOUNDS .4. FLUOROBENZYLPHOSPHONO-SULFONIC ACIDS, Phosphorus, sulfur and silicon and the related elements, 86(1-4), 1994, pp. 145-155
Citations number
16
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Phosphorus, sulfur and silicon and the related elements → ACNP
ISSN journal
10426507
Volume
86
Issue
1-4
Year of publication
1994
Pages
145 - 155
Database
ISI
SICI code
1042-6507(1994)86:1-4<145:OPC.F>2.0.ZU;2-B
Abstract
Four new organosulphur phosphorus acid compounds have been obtained by sulphonation with liquid SO3: 2-fluorobenzylphosphonic and 4-fluorobe nzylphosphonic acids gave 2-fluorobenzylphosphono-5-sulphonic and 4-fl uorobenzylphosphono-3-sulphonic acids respectively, in nearly quantita tive yields; 3-fluorobenzylphosphonic acid gave 3-fluorobenzylphosphon o-6-sulphonic acid (85%) and 3-fluorobenzylphosphono-4-sulphonic acid (15%). Product structures are based on C-13 magnetic resonance data. T he entry of the SO3H group into the aromatic ring seems mainly ruled b y the fluorine substituent.