Patents by Inventor Wildeliz Correa-Ramirez

Wildeliz Correa-Ramirez 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).

  • Highly enantioselective carbonyl reduction with borane catalyzed by chiral spiroborate esters derived from chiral beta-aminoalcohols
    Publication number: 20080200672
    Abstract: Novel spiroborate esters derived from non-recemic 1,2-amino alcohols were examined as chiral catalyst in the borane reduction of acetophenone and other aromatic ketones at room temperature. The optically active alcohols were obtained in excellent chemical yields and up to 99% ee with less than 10% catalyst.
    Type: Application
    Filed: August 30, 2006
    Publication date: August 21, 2008
    Inventors: Margarita Ortiz-Marciales, Viatcheslav Stepanenko, Wildeliz Correa-Ramirez, Melvin de Jesus
  • Efficient and convenient procedure for the synthesis of B-alkylated oxazaborolidines derived from ephedrine and norephedrine
    Patent number: 7109345
    Abstract: A novel and efficient alkylation procedure of B—H-1,3,2-oxazaborolidines derived from ephedrine and norephedrine has been established. Representative B-butyl- and B-methyl-1,3,2-oxazaborolidines were prepared in good yield and excellent purity by one pot treatment of the parent boraheterocyclic compound with the corresponding organolithium reagent and subsequent hydrolysis of the cyclic borohydride with anhydrous ammonium chloride.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: September 19, 2006
    Inventors: Margarita Ortiz-Marciales, Melvin de Jesús, Eduvigis Gonzalez, Sandraliz Espinosa, Wildeliz Correa-Ramirez