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(12) PATENT APPLICATION PUBLICATION (21) Application No.3657/DEL/2011 A (19) INDIA (22) Date of filing of Application :15/12/2011 (43) Publication Date : 21/06/2013 (54) Title of the invention : A NEW ORGANOCATALYTIC SYNTHESIS OF CHIRAL PYRAZOLIDINES AND THEIR ANALOGUES (51) International classification :C07D (31) Priority Document No :NA (32) Priority Date :NA (33) Name of priority country :NA (86) International Application No :NA Filing Date :NA (87) International Publication No :NA (61) Patent of Addition to Application Number :NA Filing Date :NA (62) Divisional to Application Number :NA Filing Date :NA (71)Name of Applicant : 1)COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH Address of Applicant :ANUSANDHAN BHAWAN, RAFI MARG, NEW DELHI-110001, INDIA (72)Name of Inventor : 1)BOOPATHI SENTHIL KUMAR 2)VAITHIYANATHAN VENKATARAMASUBRAMANIAN 3)ARUMUGAM SUDALAI (57) Abstract : This invention relates to a highly enantio- and diastereoselective synthesis of functionalised pyrazolidines via tandem a- amination-Corey Chaykovsky reaction of aldehydes.The reaction allows the creation of three covalent bonds and two contiguous chiral centers in excellent enantio and diastereoselectivity with highly atom-economic transformation in a single step. No. of Pages : 14 No. of Claims : 6 The Patent Office Journal 21/06/2013 13454
(12) PATENT APPLICATION PUBLICATION (21) Application No.3659/DEL/2011 A (19) INDIA (22) Date of filing of Application :15/12/2011 (43) Publication Date : 21/06/2013 (54) Title of the invention : PROCESS FOR THE PRODUCTION OF 4-SUBSTITUTED CHROMANES VIA GOLD CATALYSIS (51) International classification :H01J (31) Priority Document No :NA (32) Priority Date :NA (33) Name of priority country :NA (86) International Application No :NA Filing Date :NA (87) International Publication No :NA (61) Patent of Addition to Application Number :NA Filing Date :NA (62) Divisional to Application Number :NA Filing Date :NA (71)Name of Applicant : 1)COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH Address of Applicant :ANUSANDHAN BHAWAN, RAFI MARG, NEW DELHI-110001, INDIA Delhi India (72)Name of Inventor : 1)PANDURANG VILASRAO CHOUTHAIWALE 2)DATTATRAY AMBADAS DEVALANKAR 3)SUDALAI ARUMUGAM (57) Abstract : Present invention provides process for the synthesis of 4-aryl substituted chromanes by using gold (III) chloride-catalyzed intramolecular Friedel-Crafts reaction of 3-aryloxy benzyl alcohol. No. of Pages : 14 No. of Claims : 7 The Patent Office Journal 21/06/2013 13455
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Part-I - Controller General of Patents Designs and Trademarks

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