FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing a compound of formula (I)
comprising a reaction of coupling a compound of formula
with a compound of formula (III),
where M is Na+.
EFFECT: technical result is a novel method of producing a compound of formula (I), which increases stereoselectivity, simplifies purification, reduces the number of reaction steps, improves overall yield, increases efficiency, environmental purity and cost.
66 cl, 5 tbl, 16 ex
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