HomeMCPWorkbenchSkills
HomeWorkbenchNotificationsMe
llms.txt · MCP GuidePrivacy Policy · Terms of Service · Supportv1.8.0
  1. Home
  2. /Reaction

Water → 3-(5-Tributylstannanyl-thiazol-2-yl)-pyridine

HRID 1854619
Notes
Print preview

Reaction equation

HRID 1854619 reaction equation
[S:1]1[CH:5]=[CH:4][N:3]=[C:2]1[C:6]1[CH:7]=[N:8][CH:9]=[CH:10][CH:11]=1.[Li]CCCC.[CH2:17]([Sn:21](Cl)([CH2:26][CH2:27][CH2:28][CH3:29])[CH2:22][CH2:23][CH2:24][CH3:25])[CH2:18][CH2:19][CH3:20].O>C1COCC1>[CH2:26]([Sn:21]([CH2:17][CH2:18][CH2:19][CH3:20])([CH2:22][CH2:23][CH2:24][CH3:25])[C:5]1[S:1][C:2]([C:6]2[CH:7]=[N:8][CH:9]=[CH:10][CH:11]=2)=[N:3][CH:4]=1)[CH2:27][CH2:28][CH3:29]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 15096Tributyltin ChlorideHCID 111827873-Thiazol-2-yl-pyridineHCID 178418339Butyllithium

Product 1

HCID 673254043-(5-Tributylstannanyl-thiazol-2-yl)-pyridineYield 37.1%

Reagents, catalysts & solvents 1

HCID 8028
Tetrahydrofuran
Solvent

Conditions

Temperature
-78 °C

Procedure

To a stirred solution of 3-thiazol-2-yl-pyridine (J. Med. Chem. 2005, 48, 224) (927 mg, 5.71 mmol) in dry THF (30 mL) cooled at −78° C. under an inert atmosphere was added n-BuLi (2.5M in hexanes) (2.75 mL, 6.87 mmol) dropwise. After stirring at −78° C. for 45 mins, tributyltin chloride (1.86 mL, 6.87 mmol) was added. The mixture was allowed to warm to 0° C. over 90 mins, then treated with water and extracted with ethyl acetate. The combined organic layers were washed with brine, dried over MgSO4, filtered and evaporated under reduced pressure before purification by column chromatography on SiO2 using combiflash Companion®, eluting with cyclohexane/ethyl acetate 100/0 to 82/18 to afford 3-(5-tributylstannanyl-thiazol-2-yl)-pyridine as a colourless oil (955 mg, 37%). 1H NMR (DMSO-d6, 300 MHz) δ=9.11 (m, 1H), 8.62 (dd, J=4.77-1.52 Hz, 1H), 8.28 (m, 1H), 7.90 (s, 1H), 7.50 (dd, J=8.0-4.8 Hz, 1H), 1.52 (m, 6H), 1.28 (m, 6H), 1.13 (m, 6H), 0.84 (t, J=7.2 Hz, 9H).

Workup

  1. temperatureto warm to 0° C. over 90 mins
  2. extractionextracted with ethyl acetate
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. customevaporated under reduced pressure before purification by column chromatography on SiO2 using combiflash Companion®
  7. washeluting with cyclohexane/ethyl acetate 100/0 to 82/18

Sources & evidence

ORD record
ord-7207b0e0828847e08aa25e24b082f858
Source dataset
uspto-grants-2015_02
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08962665B2

Reaction notes

Loading…

On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes