ChemicalBook CAS DataBase List P276

P276 synthesis

10synthesis methods

Product Name:P276
CAS Number:920113-03-7
Molecular formula:C21H21Cl2NO5
Molecular Weight:438.3

920113-02-6
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920113-03-7
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Yield: 97%

Reaction Conditions:

with hydrogenchloride in methanol;diethyl ether

Steps:

12
Example 12:(+)-£rans-2-(2-Chloro-phenyl)-5,7-dihydroxy-8-(2-hydroxymethyl-1 -methyl- pyrrolidin-3-yl)-chromen-4-one hydrochloride; (+)-^ans-2-(2-Chlorophenyl)-8-(2-hydroxymethyl-1 -methyl-pyrrolidin-3-yl)-5,7- dimethoxy-chromen-4-one (0.2 g, 0.48 mmol) was suspended in methanol (2 ml_) and ethereal HCI (5 ml_) was added. The suspension was stirred to get a clear solution. The solution was concentrated under reduced pressure to obtain the title compound. Yield: 0.21 g (97 %) [ ]_D²⁵ = +21.2° (c = 0.2, methanol)¹H NMR (CD₃OD, 300MHz): 7.80 (d, 1H), 7.60 (m, 3H), 6.53 (s, 1H), 6.37 (s, 1H), 4.23 (m, 1H), 3.89 (m, 2H), 3.63 (m, 1H), 3.59 (dd, 1H), 3.38 (m, 1H), 2.90 (s, 3H), 2.45 (m, 1H), 2.35 (m, 1H). MS (ES+): m/z 402 (M +1), free base.

References:

NICHOLAS PIRAMAL INDIA LIMITED WO2008/7169, 2008, A1 Location in patent:Page/Page column 25-26

cis-((2S,3R)-1-methyl-3-(2,4,6-trimethoxyphenyl)pyrrolidin-2-yl)methanol

117955-09-6
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920113-03-7
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References

((2R,3S)-1-methyl-3-(2,4,6-trimethoxyphenyl)pyrrolidin-2-yl)methanol

920112-97-6
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920113-03-7
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References

609-65-4 Synthesis

609-65-4
340 suppliers
$19.00/25mL

920113-03-7
59 suppliers
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References

118-91-2 Synthesis

118-91-2
675 suppliers
$8.50/5g

920113-03-7
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References

P276 Related Search:

LDC000067 Sunitinib Malate Ribociclib

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