Acetic Acid → 2-Chloro-4-morpholin-4-yl-6-(3-morpholin-4-ylazetidin-1-ylmethyl)thieno[3,2-d]pyrimidine

HRID 1922934Notes

Reaction equation

HRID 1922934 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[S:10][C:9]([CH:11]=O)=[CH:8][C:6]=2[N:7]=1.[NH:19]1[CH2:22][CH:21]([N:23]2[CH2:28][CH2:27][O:26][CH2:25][CH2:24]2)[CH2:20]1.C(OC)(OC)OC.C(O)(=O)C.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[S:10][C:9]([CH2:11][N:19]3[CH2:22][CH:21]([N:23]4[CH2:28][CH2:27][O:26][CH2:25][CH2:24]4)[CH2:20]3)=[CH:8][C:6]=2[N:7]=1

Participants

7

Reactant 5

HCID 176Acetic AcidHCID 9005Trimethyl orthoformateHCID 5049666Sodium triacetoxyborohydrideHCID 134019734-(Azetidin-3-yl)morpholineHCID 457899852-Chloro-4-morpholinothieno[3,2-d]pyrimidine-6-carbaldehyde

Product 1

HCID 596053422-Chloro-4-morpholin-4-yl-6-(3-morpholin-4-ylazetidin-1-ylmethyl)thieno[3,2-d]pyrimidineYield 62.1%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

To a solution of 2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidine-6-carbaldehyde (953 mg, 3.36 mmol) in DCE (50 mL) was added 4-azetidin-3-ylmorpholine (525 mg, 3.69 mmol), trimethyl orthoformate (3.67 mL, 33.58 mmol) and acetic acid (0.19 mL, 3.36 mmol). After stirring at room temperature for 2 h sodium triacetoxyborohydride (1.10 g, 5.03 mmol) was added and the resulting mixture stirred for a further 2 h. The reaction mixture was loaded onto an Isolute® SCX-2 cartridge, washed with H2O/MeOH then eluted with 2 M NH3 in MeOH/DCM. The resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, gradient 0:100 to 20:80) to give 2-chloro-4-morpholin-4-yl-6-(3-morpholin-4-yl-azetidin-1-ylmethyl)thieno[3,2-d]pyrimidine as a pale yellow solid (856 mg, 62%). LCMS (Method C): RT=2.77 min, [M+H]+ 410

Workup

  1. additionwas added
  2. washwashed with H2O/MeOH
  3. washthen eluted with 2 M NH3 in MeOH/DCM
  4. customThe resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, gradient 0:100 to 20:80)

Sources & evidence

ORD record
ord-c3bb755801d042b787ff5f75310ebc7f
Source dataset
uspto-grants-2012_05
Patent number
US08173650B2

Reaction notes

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