Structure of 30065-27-1
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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Batch number can be found on the product's label following the word 'Batch'.
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CAS No. : | 30065-27-1 |
Formula : | C9H10N4OS |
M.W : | 222.27 |
SMILES Code : | O=C(NN)CSC1=NC2=CC=CC=C2N1 |
MDL No. : | MFCD00171027 |
InChI Key : | UIHKXOZJFOTOCE-UHFFFAOYSA-N |
Pubchem ID : | 676606 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H312-H332 |
Precautionary Statements: | P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P330-P363-P501 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With hydrazine hydrate; In ethanol; for 3.0h;Reflux; | A mixture of 3 (2.36 g, 0.01 mole), hydrazine hydrate (1.5 g, 0.03 mole) and ethanol(40 ml) was heated under reflux for 3 h. (TLC). The product was filtered off, recystallized from ethanol to yield white powder in 92% yield, m.p.143-145C Rf = 0.33 (5% MeOH in CH2Cl2). 1H NMR (DMSOd6): d = 2.11 (brs, 2H, NH2), 4.50 (s, 2H, CH2), 5.35(brs, 1H, NH), 7.27 (d, 2H, J= 5.5 Hz, Ar-H), 7.55 (d,2H, J= 5.5 Hz, Ar-H), 8.35 (brs, 1H, NH). |
70% | With hydrazine hydrate; In ethanol; for 6.0h;Reflux; | The mixture of 2-carboxy ethyl thio 1H-benzimidazole 4 gm (0.004 mole) and Hydrazine hydrate 6 ml (0.01 mole) are mixed well in a RBF and heated on water bath for 10min. then dissolved in 60 ml ethanol, the reaction mixture is heated with reflux condenser for six hours, cooled to room temperature and the reaction mixture was added to 100 gm of ice-water, and kept aside for the crystallization. The colorless crystals are collected by filtration, and recrystallized from water. |
62% | With hydrazine hydrate; In ethanol; for 15.0h;Reflux; | To above ester dissolved in appropriate quantity of ethanol (25ml) hydrazine hydrate (0.1mole, 5ml)was added and refluxed for 15hrs. The mixture was kept for 10-12 hours at room temperature, solid obtained was filtered. Yield 62%, m. p. 236C. |
62% | With hydrazine hydrate; In ethanol; for 5.0h; | General procedure: A solution (20 mL) of hydrazine hydrate (5 mL) in EtOH (15 mL) was added as portionsinto the reaction mixture of ethyl 2-((benzazol-2-yl)thio)acetate 2a-2b (0.012 mol) in EtOH(50 mL). The reaction mixture was stirred for 5 h. The precipitated product was filtered, washedwith cold-ethanol, dried and recrystallized from EtOH. To afford the following compounds:2-((1H-benzimidazol-2-yl)thio)acetohydrazide (3a), CAS No:30065-27-1, Yield 62%, m.p. = 164-166 C (measured), m.p. = 165-166 C (reported) [63]; 2-((1H-benzothiazole-2-yl)thio)acetohydrazide (3b),CAS No:24044-91-5, Yield 81%, m.p. = 175-177 C (measured), m.p. = 173-174 C (reported) [62]. |
With hydrazine; for 4.0h;Reflux; | General procedure: [Method 2] Ethyl chloroacetate (0.1mol), was addeddrop-wise to a stirred solution of 2- mercaptobenzimidazole2(0.1mol), and sodium hydroxide (0.1mol) in absolute ethanol(100ml). The reaction mixture was refluxed for 6 hours, filteredand the crude product was recrystallized from ethanolto give ethyl 2-(1H-benzo[d]imidazol-2-ylthio) acetate (4).The mixture of ester 4 (0.05mol) and appropriate aromaticamine (0.2mol) was refluxed for 4 hours, cooled and pouredinto ice water. The precipitate was filtered off and then recrystallizedfrom ethanol to give 3a-l. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With acetic acid; In ethanol;Reflux; | General procedure: A solution of 4 (0.01 mol), an aromatic aldehyde (0.01 mol) in abs. ethanol (30 ml) and glacial acetic acid (1 ml) was refluxed for 6-8 h (TLC). The solvent was evaporated under reduced pressure and the residue was filtered off and recrystallized from ethanol to afford 8(a-d) in 88-94% yields. |
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