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WO2007017898A3 - A process of recovery of pt/c catalyst in the preparation of azithromycin dihydrate - Google Patents

A process of recovery of pt/c catalyst in the preparation of azithromycin dihydrate Download PDF

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Publication number
WO2007017898A3
WO2007017898A3 PCT/IN2006/000178 IN2006000178W WO2007017898A3 WO 2007017898 A3 WO2007017898 A3 WO 2007017898A3 IN 2006000178 W IN2006000178 W IN 2006000178W WO 2007017898 A3 WO2007017898 A3 WO 2007017898A3
Authority
WO
WIPO (PCT)
Prior art keywords
catalyst
recovery
hydrogenation
spent
preparation
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.)
Ceased
Application number
PCT/IN2006/000178
Other languages
French (fr)
Other versions
WO2007017898A2 (en
Inventor
Rajan Vitthal Gupte
Chandrabhan Madhav Hire
Kishore Balaji Sabade
Rakesh Acharya
Deepak Bhaurao Mhamunkar
Jadhav Santosh Bhau
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.)
Kopran Research Laboratories Ltd
Original Assignee
Kopran Research Laboratories Ltd
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.)
Filing date
Publication date
Application filed by Kopran Research Laboratories Ltd filed Critical Kopran Research Laboratories Ltd
Publication of WO2007017898A2 publication Critical patent/WO2007017898A2/en
Publication of WO2007017898A3 publication Critical patent/WO2007017898A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/90—Regeneration or reactivation
    • B01J23/96—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the noble metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
    • B01J38/60—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
  • Saccharide Compounds (AREA)

Abstract

A process of recovery of Pt/C catalyst from the hydrogenation of 6,9-Imino ether is carried out by isolating spent Pt/C by filtration, reactivating the wet spent Pt/C catalyst by treating the spent Pt/C with strong acid like perchloric acid and recycling the reactivated catalyst along with fresh catalyst in the weight ratio of 98:2 in next cycle of hydrogenation of 6,9-Imino ether. The regenerated catalyst and its use in the hydrogenation of 6,9-Imino ether for atleast ten cycles are also disclosed herein.
PCT/IN2006/000178 2005-05-24 2006-05-24 A process of recovery of pt/c catalyst in the preparation of azithromycin dihydrate Ceased WO2007017898A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN626/MUM/2005 2005-05-24
IN626MU2005 2005-05-24

Publications (2)

Publication Number Publication Date
WO2007017898A2 WO2007017898A2 (en) 2007-02-15
WO2007017898A3 true WO2007017898A3 (en) 2007-04-26

Family

ID=37727719

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2006/000178 Ceased WO2007017898A2 (en) 2005-05-24 2006-05-24 A process of recovery of pt/c catalyst in the preparation of azithromycin dihydrate

Country Status (1)

Country Link
WO (1) WO2007017898A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8106111B2 (en) 2009-05-15 2012-01-31 Eastman Chemical Company Antimicrobial effect of cycloaliphatic diol antimicrobial agents in coating compositions

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002044193A1 (en) * 2000-11-30 2002-06-06 Ercros Industrial, S.A. Method for obtaining azaerythromycin

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002044193A1 (en) * 2000-11-30 2002-06-06 Ercros Industrial, S.A. Method for obtaining azaerythromycin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8106111B2 (en) 2009-05-15 2012-01-31 Eastman Chemical Company Antimicrobial effect of cycloaliphatic diol antimicrobial agents in coating compositions

Also Published As

Publication number Publication date
WO2007017898A2 (en) 2007-02-15

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