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

Water → 4-(5-Methyl-1,3,4-thiadiazol-2-yl)benzaldehyde

HRID 2359216
Notes
Print preview

Reaction equation

HRID 2359216 reaction equation
Br[C:2]1[S:3][C:4]([CH3:7])=[N:5][N:6]=1.[CH:8]([C:10]1[CH:15]=[CH:14][C:13](B(O)O)=[CH:12][CH:11]=1)=[O:9].C([O-])([O-])=O.[Na+].[Na+].O>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CCOC(C)=O>[CH3:7][C:4]1[S:3][C:2]([C:13]2[CH:14]=[CH:15][C:10]([CH:8]=[O:9])=[CH:11][CH:12]=2)=[N:6][N:5]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 5910734-Formylphenylboronic AcidHCID 71719042-Bromo-5-methyl-1,3,4-thiadiazole

Product 1

HCID 584320414-(5-Methyl-1,3,4-thiadiazol-2-yl)benzaldehydeYield 51%

Reagents, catalysts & solvents 3

HCID 178418397
HCID 178418397, compound
Catalyst
HCID 8857Ethyl AcetateSolvent
HCID 312751,4-DioxaneSolvent

Procedure

To a solution of 2-bromo-5-methyl-1,3,4-thiadiazole (2.0 g, 11.17 mmol) in dioxane (40 ml) was added 4-formylbenzeneboronic acid (3.35 g, 22.34 mmol) and 2M Na2CO3 (23 ml). This mixture was degassed with a stream of argon for 2 min. Tetrakis(triphenylphosphine)palladium (0.636 g, 0.55 mmol) was added and this mixture was heated at reflux overnight under argon. After cooling to room temperature, H2O (30 ml) and EtOAc (50 ml) were added and stirred for 5 min. The organic layer was separated and washed with brine, dried over Na2SO4 and concentrated in vacuo. Purification by chromatography (10 to 20% EtOAc/hexanes) gave 4-(5-methyl-1,3,4-thiadiazol-2-yl)benzaldehyde as a pale yellow liquid (1.16 g, 51% yield).

Workup

  1. customThis mixture was degassed with a stream of argon for 2 min
  2. temperaturethis mixture was heated
  3. temperatureat reflux overnight under argon
  4. customThe organic layer was separated
  5. washwashed with brine
  6. dry with materialdried over Na2SO4
  7. concentrationconcentrated in vacuo
  8. customPurification by chromatography (10 to 20% EtOAc/hexanes)

Sources & evidence

ORD record
ord-b2480fd405d345e58655fd4def69ab87
Source dataset
uspto-grants-2014_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08685975B2

Reaction notes

Loading…

On this pageParticipantsProcedureWorkupSources & evidenceReaction notes