CHEMOSELECTIVE PROTECTION OF CARBONYL COMPOUNDS AS DITHIOACETALS USING POLYSTYRENE AND SILICA GEL SUPPORTED ALCL3 AND FECL3

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TAMAMI B.; PARVANAK BORUJENY K.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Iranian Polymer Journal Year:2003 | Volume:12 | Issue:6 Page(s): 507-513

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Information Journal Paper

Title

CHEMOSELECTIVE PROTECTION OF CARBONYL COMPOUNDS AS DITHIOACETALS USING POLYSTYRENE AND SILICA GEL SUPPORTED ALCL3 AND FECL3

Author(s)

TAMAMI B. | PARVANAK BORUJENY K. | Issue Writer Certificate

Keywords

POLYMER SUPPORTED LEWIS ACIDSQ4

DITHIOACETALIZATIONQ4

CARBONYL COMPOUNDQ4

ALUMINIUM CHLORIDEQ4

IRON(III) CHLORIDEQ4

Abstract

Cross-linked polystyrene supported AlCl3 and FeCl3 and silica gel supported AlCl3 have shown to be mild and chemoselective heterogeneous catalysts for DITHIOACETALIZATION of CARBONYL COMPOUNDs. 1,3-Dithiolanes are obtained in excellent yields in the presence of Ps-AlCl3, Ps-FeCl3 and SiO2-AlCl3 from various aldehydes and ketones containing electron donating and withdrawing groups. The chemoselectivity of these catalysts toward aldehydes and ketones is successfully employed in the chemoselective DITHIOACETALIZATION. The results show that these catalysts are able to discriminate between aldehydes and ketones, and aliphatic and aromatic ketones. The order of catalytic activities of these catalysts was SiO2- AlCl3> Ps-FeCl3> Ps-Fecl3 These polymeric catalysts are stable (as a bench top catalyst) and can be easily regenerated and used.

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APA: Copy

TAMAMI, B., & PARVANAK BORUJENY, K.. (2003). CHEMOSELECTIVE PROTECTION OF CARBONYL COMPOUNDS AS DITHIOACETALS USING POLYSTYRENE AND SILICA GEL SUPPORTED ALCL3 AND FECL3 . IRANIAN POLYMER JOURNAL (ENGLISH), 12(6), 507-513. SID. https://sid.ir/paper/85888/en

Vancouver: Copy

TAMAMI B., PARVANAK BORUJENY K.. CHEMOSELECTIVE PROTECTION OF CARBONYL COMPOUNDS AS DITHIOACETALS USING POLYSTYRENE AND SILICA GEL SUPPORTED ALCL3 AND FECL3 . IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2003;12(6):507-513. Available from: https://sid.ir/paper/85888/en

IEEE: Copy

B. TAMAMI, and K. PARVANAK BORUJENY, “CHEMOSELECTIVE PROTECTION OF CARBONYL COMPOUNDS AS DITHIOACETALS USING POLYSTYRENE AND SILICA GEL SUPPORTED ALCL3 AND FECL3 ,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 12, no. 6, pp. 507–513, 2003, [Online]. Available: https://sid.ir/paper/85888/en

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