Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus containing
Reexamination Certificate
2007-04-24
2007-04-24
Barts, Samuel (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus containing
C568S003000, C568S016000
Reexamination Certificate
active
10497808
ABSTRACT:
A production method of a compound represented by the formulawherein R1a, R1b, R1c, R1d, R1e, R1f, R2a, R2b, R2c, R2d, R2eand R2fare the same or different and each is a hydrogen atom and the like, and R3, R4, R5, R6, R7, R8, R9and R10are the same or different and each is a hydrogen atom and the like, or a salt thereof, which comprises reacting a compound represented by the formulawherein X is a leaving group and other symbols are as defined above, or a salt thereof, with a phosphine-borane complex represented by the formulawherein the symbols are as defined above, or a salt thereof, in a solvent in the presence of an amine and a nickel catalyst, is provided.
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Goto Mitsutaka
Yamano Mitsuhisa
Barts Samuel
Chao Mark
Ramesh Elaine M.
Takeda Pharmaceutical Company Limited
Valenrod Yevgeny
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