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Sodium triacetoxyborohydride → 5-Chloro-2-[3-(1,1-Dioxo-1-thiomorpholin-4-yl)azetidin-1-ylmethyl]-7-morpholin-4-ylthiazolo[5,4-d]pyrimidine

HRID 1922759
Notes
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Reaction equation

HRID 1922759 reaction equation
[Cl:1][C:2]1[N:3]=[C:4]([N:13]2[CH2:18][CH2:17][O:16][CH2:15][CH2:14]2)[C:5]2[N:10]=[C:9]([CH:11]=O)[S:8][C:6]=2[N:7]=1.[NH:19]1[CH2:22][CH:21]([N:23]2[CH2:28][CH2:27][S:26](=[O:30])(=[O:29])[CH2:25][CH2:24]2)[CH2:20]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[Cl:1][C:2]1[N:3]=[C:4]([N:13]2[CH2:18][CH2:17][O:16][CH2:15][CH2:14]2)[C:5]2[N:10]=[C:9]([CH2:11][N:19]3[CH2:22][CH:21]([N:23]4[CH2:28][CH2:27][S:26](=[O:30])(=[O:29])[CH2:25][CH2:24]4)[CH2:20]3)[S:8][C:6]=2[N:7]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 576854055-Chloro-7-morpholinothiazolo[5,4-d]pyrimidine-2-carbaldehydeHCID 597519614-(Azetidin-3-yl)thiomorpholine 1,1-dioxide

Product 1

HCID 596058185-Chloro-2-[3-(1,1-Dioxo-1-thiomorpholin-4-yl)azetidin-1-ylmethyl]-7-morpholin-4-ylthiazolo[5,4-d]pyrimidineYield 89%

Reagents, catalysts & solvents 1

HCID 11
1,2-Dichloroethane
Solvent

Procedure

A mixture of 5-chloro-7-morpholin-4-yl-thiazolo[5,4-d]pyrimidine-2-carbaldehyde (400 mg, 1.40 mmol), 4-azetidin-3-ylthiomorpholine-1,1-dioxide (321 mg, 1.69 mmol) and 4 Å powdered molecular sieves (600 mg) in DCE (20 mL) was stirred at room temperature for 4 h before the addition of sodium triacetoxyborohydride (595 mg, 2.80 mmol). The reaction mixture was stirred for 65 h then filtered through celite, washing with DCM. The organic phase was washed with brine (×1) and concentrated in vacuo affording 5-Chloro-2-[3-(1,1-Dioxo-1-thiomorpholin-4-yl)azetidin-1-ylmethyl]-7-morpholin-4-ylthiazolo[5,4-d]pyrimidine as an orange powder (572 mg, 89%). LCMS (Method H): RT 2.43 min [M+H]+ 459.2

Workup

  1. filtrationthen filtered through celite
  2. washwashing with DCM
  3. washThe organic phase was washed with brine (×1)
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-0b358f34e7c94eb8a422be7bff5cc639
Source dataset
uspto-grants-2012_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08173650B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes