612487-72-6Relevant articles and documents
Development of a mild and robust method for large-scale palladium-catalysed cyanation of aryl bromides: Importance of the order of addition
Ryberg, Per
, p. 540 - 543 (2008)
A mild and robust method for the large-scale palladium-catalysed cyanation of aryl bromides has been developed. The reaction is sensitive to cyanide poisoning of the catalyst, and it was found that the order of adding the reagents had a strong impact on the performance of the reaction. Addition of the cyanide source to a preheated mixture of the other reagents was critical for achieving a robust and scaleable process. This improved protocol allowed the reaction to be run to full conversion within 3 h at 50 °C on a 6.7 kg scale. Furthermore, it led to the identification of several new efficient catalysts for the reaction.
A PROCESS FOR PREPARING 2-HYDROXY-3- [5- (MORPHOLIN-4-YLMETHYL)PYRIDIN-2-YL] LH-INDOLE-5-CARBONITRILE AS A FREE BASE OR SALTS THEREOF
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Page/Page column 23-24, (2010/11/28)
The present invention relates to a new process for the manufacture of the compound 2-hydroxy-3-[5-(moφholin-4-ylmethyl)pyridin-2-yl]lH'-indole-5-carbonitrile as a free base and pharmaceutically acceptable salts thereof, particularly the 2-hydroxy-3-[5- (morpholm-4-ylmethyl)pyridin-2-yl]lH-indole-5-carbonitrile citrate, to the use of said compounds for the manufacturing of a medicament for the treatment of cognitive disorders, Alzheimer disease, dementias, chronic and acute neurodegenerative diseases, bipolar disorders, schizophrenia, diabetes, hair loss etc. and to new intermediates as well as a robust condition for catalytic cyanation for the preparation of 2-hydroxy-3-[5- (moφholin-4-yhnethyl)pyridin-2-yl]lH-indole-5-carbonitrile as a free base and pharmaceutically acceptable salts thereof, and to a new intermediate prepared in said process suitable for large scale manufacturing of said compounds.The invention also relates to a new use in cyanation reaction of palladium catalysts.