Patents by Inventor Nicka Chinkov

Nicka Chinkov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PREPARATION OF CIS-2-ALKENOIC ACIDS
    Publication number: 20240002323
    Abstract: A process for the preparation of cis-2-alkenoic acid or an alkali metal salt thereof, comprising rearranging 1,3-dibromo-2-alkanone in an alkaline environment in the presence of a catalytically effective amount of an alkali metal salt of cis-2-alkenoic acid, and isolating from the reaction mixture cis-2-alkenoic acid, either in the form of the free acid or in the form of the alkali metal salt.
    Type: Application
    Filed: November 30, 2021
    Publication date: January 4, 2024
    Inventors: Jakob OREN, Nasif YASSIN, Nicka CHINKOV, Ronit YAHALOMI SEGUI
  • Process for the Synthesis of Chiral Propargylic Alcohols
    Publication number: 20160326101
    Abstract: A process for the synthesis of chiral propargylic alcohols.
    Type: Application
    Filed: May 12, 2016
    Publication date: November 10, 2016
    Inventors: Meinrad Brenner, Erick M. Carreira, Nicka Chinkov, Miriam Lorenzi, Aleksander Warm, Lothar Zimmermann
  • Process for the synthesis of cyclic carbamates
    Patent number: 8969550
    Abstract: The invention is directed to a process for the preparation of a cyclic carbamate starting with o-aminobenzyl alcohol and/or a suitable salt thereof, which is reacted with a cyclization agent selected from phosgene, diphosgene, triphosgene and mixtures thereof, and in that the reaction carried out in the presence of an aqueous base, and a water-immiscible organic solvent, said organic solvent mainly comprising at least one compound selected from C2-5-alkyl C2-5-carboxylates and mixtures of at least one C2-5-alkyl C2-5-carboxylate with at least one C5-8-alkane.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: March 3, 2015
    Assignee: Lonza Ltd.
    Inventors: Meinrad Brenner, Erick M. Carreira, Nicka Chinkov, Miriam Lorenzi, Aleksander Warm, Lothar Zimmermann
  • Process for the synthesis of cyclic carbamates
    Patent number: 8957204
    Abstract: The invention is directed to a process for the preparation of a cyclic carbamate starting with a chiral propargylic alcohol and/or a suitable salt thereof, which is reacted with a cyclization agent selected from phosgene, diphosgene, triphosgene and mixtures thereof, and in that the reaction is carried out in the presence of an aqueous base, and a water-immiscible organic solvent, said organic solvent mainly comprising at least one compound selected from C2-5-alkyl C2-5-carboxylates and mixtures of at least one C2-5-alkyl C2-5-carboxylate with at least one C5-8-alkane. Another aspect of the invention is directed to a process for the synthesis of said cyclic carbamate starting described above, wherein also a process for the preparation of the chiral propargylic alcohol is provided.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: February 17, 2015
    Assignee: Lonza Ltd.
    Inventors: Meinrad Brenner, Erick M. Carreira, Nicka Chinkov, Miriam Lorenzi, Aleksander Warm, Lothar Zimmermann
  • PROCESS FOR THE SYNTHESIS OF CHIRAL PROPARGYLIC ALCOHOLS
    Publication number: 20130324763
    Abstract: A process for the synthesis of chiral propargylic alcohols.
    Type: Application
    Filed: October 14, 2011
    Publication date: December 5, 2013
    Applicant: LONZA LTD
    Inventors: Meinrad Brenner, Erick M. Carreira, Nicka Chinkov, Miriam Lorenzi, Aleksander Warm, Lothar Zimmermann
  • PROCESS FOR THE SYNTHESIS OF CYCLIC CARBAMATES
    Publication number: 20130217875
    Abstract: The invention is directed to a process for the preparation of a cyclic carbamate starting with a chiral propargylic alcohol and/or a suitable salt thereof, which is reacted with a cyclisation agent selected from phosgene, diphosgene, triphosgene and mixtures thereof, and in that the reaction is carried out in the presence of an aqueous base, and a water-immiscible organic solvent, said organic solvent mainly comprising at least one compound selected from C2-5-alkyl C2-5-carboxylates and mixtures of at least one C2-5-alkyl C2-5-carboxylate with at least one C5-8-alkane. Another aspect of the invention is directed to a process for the synthesis of said cyclic carbamate starting described above, wherein also a process for the preparation of the chiral propargylic alcohol is provided.
    Type: Application
    Filed: October 14, 2011
    Publication date: August 22, 2013
    Applicant: LONZA LTD
    Inventors: Meinrad Brenner, Erick M. Carreira, Nicka Chinkov, Miriam Lorenzi, Aleksander Warm, Lothar Zimmermann
  • PROCESS FOR THE SYNTHESIS OF CYCLIC CARBAMATES
    Publication number: 20130211077
    Abstract: The invention is directed to a process for the preparation of a cyclic carbamate starting with o-aminobenzyl alcohol and/or a suitable salt thereof, which is reacted with a cyclisation agent selected from phosgene, diphosgene, triphosgene and mixtures thereof, and in that the reaction carried out in the presence of an aqueous base, and a water-immiscible organic solvent, said organic solvent mainly comprising at least one compound selected from C2-5-alkyl C2-5-carboxylates and mixtures of at least one C2-5-alkyl C2-5-carboxylate with at least one C5-8-alkane.
    Type: Application
    Filed: October 14, 2011
    Publication date: August 15, 2013
    Applicant: LONZA LTD
    Inventors: Meinrad Brenner, Erick M. Carreira, Nicka Chinkov, Miriam Lorenzi, Aleksander Warm, Lothar Zimmermann
  • Autocatalytic process for the synthesis of chiral propargylic alcohols
    Patent number: 8283502
    Abstract: An autocatalytic process for the synthesis of chiral propargylic alcohols.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: October 9, 2012
    Assignee: Lonza Ltd.
    Inventors: Nicka Chinkov, Aleksander Warm, Erick Carreira
  • Process for the synthesis of a propargylic alcohol
    Patent number: 8115032
    Abstract: A process for the preparation of the compound of formula
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: February 14, 2012
    Assignee: Lonza Ltd.
    Inventors: Nicka Chinkov, Aleksander Warm, Erick Carreira
  • Autocatalytic Process for the Synthesis of Chiral Propargylic Alcohols
    Publication number: 20120029237
    Abstract: An autocatalytic process for the synthesis of chiral propargylic alcohols.
    Type: Application
    Filed: April 9, 2010
    Publication date: February 2, 2012
    Inventors: Nicka Chinkov, Aleksander Warm, Erick Carreira
  • PROCESS FOR THE SYNTHESIS OF A PROPARGYLIC ALCOHOL
    Publication number: 20110172464
    Abstract: A process for the preparation of the compound of formula
    Type: Application
    Filed: April 9, 2010
    Publication date: July 14, 2011
    Inventors: Nicka Chinkov, Aleksander Warm, Erick Carreira