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[ CAS No. 96-43-5 ] {[proInfo.proName]}

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Cat. No.: {[proInfo.prAm]}
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Chemical Structure| 96-43-5
Chemical Structure| 96-43-5
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Quality Control of [ 96-43-5 ]

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Product Details of [ 96-43-5 ]

CAS No. :96-43-5 MDL No. :MFCD00005421
Formula : C4H3ClS Boiling Point : -
Linear Structure Formula :- InChI Key :GSFNQBFZFXUTBN-UHFFFAOYSA-N
M.W : 118.58 Pubchem ID :7299
Synonyms :

Safety of [ 96-43-5 ]

Signal Word:Danger Class:3
Precautionary Statements:P261-P305+P351+P338 UN#:1993
Hazard Statements:H225-H315-H319-H335 Packing Group:Ⅱ
GHS Pictogram:

Application In Synthesis of [ 96-43-5 ]

* 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.

  • Downstream synthetic route of [ 96-43-5 ]

[ 96-43-5 ] Synthesis Path-Downstream   1~10

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  • [ 50-00-0 ]
  • [ 23784-96-5 ]
  • 2
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  • [ 23784-96-5 ]
YieldReaction ConditionsOperation in experiment
58.6% With hydrogenchloride; formaldehyd; concentrated aqueous hydrochloric acid; 1. Preparation of 5-chloro-2-chloromethyl thiophene In a 250 ml round-bottom flask equipped with a mechanical stirrer and an ice/salt bath, were mixed concentrated aqueous hydrochloric acid (40 ml) and 2-chlorothiophene (40 g, 0.34 mol). This mixture was cooled to 0 C. and a stream of gaseous HCl was introduced under the surface of the mixture. A 40% aqueous solution formaldehyde (40 ml) was added dropwise, and the temperature was maintained at 3-8 C. When the addition was complete, stirring was continued for 20 minutes, while HCl gas was continuously passed through the reaction mixture. The resulting mixture was poured on 120 ml ice/water. An oil was separated and the aqueous solution was extracted with ether (2*100 ml). The combined organic extracts were washed with water (2*100 ml) and were dried over anhydrous potassium carbonate. The solvents were stripped and the residue was distilled in vacuo, to collect 33.1 g, 58.6% yield, of a colorless liquid, with a b.p. of 50-53 C. at 0.35 torr. NMR: (CDCl3) 6.7 (m,2H), 4.6 (5,2H).
  • 3
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  • [ 67-56-1 ]
  • [ 56-23-5 ]
  • [ 35475-03-7 ]
  • 4
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  • [ 3032-81-3 ]
  • [ 1260170-33-9 ]
  • 5
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  • [ 1427190-91-7 ]
  • [ 62429-55-4 ]
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  • [ 3034-31-9 ]
  • [ 1522464-91-0 ]
  • 7
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  • [ 1480-65-5 ]
  • [ 1132832-80-4 ]
YieldReaction ConditionsOperation in experiment
39% General procedure: To an oven dried glass vessel capable of being sealed with a Teflon cap (for microwave vials) was added XPhos?Pd-G2 (11.8mg, 15mumol), XPhos (14.3mg, 30mumol), B2(OH)4 (203mg, 2.25mmol), KOAc (441mg, 4.5mmol), and halide (only if a solid). The vessel was sealed, evacuated, and filled with an inert gas (4×). EtOH (15mL, degassed) was added via syringe followed by the addition of ethylene glycol (280mg, 250muL, 4.5mmol) and the halide (1.5mmol) in a similar manner (if applicable). The reaction was heated to the specified temperature until the starting material was consumed (as monitored by GC). The reaction was cooled, and a needle attached to a manifold under an inert atmosphere was inserted into the septum, and 3equiv of degassed K3PO4 (1M, 4.5mL, 4.5mmol) was added via syringe, and the reaction was allowed to sit for 5min. Then the second halide was added in a similar manner (as a solution in 500muL of degassed EtOH or THF if a solid). The manifold needle was removed, and the reaction was heated to the specified temperature for 24h. The reaction was cooled to rt and filtered through a very thin pad of Celite, eluting with 5×10mL of EtOAc, and then concentrated. The crude reaction was dissolved in EtOAc (10mL), transferred to a separatory funnel, and then saturated NaHCO3 (10mL) was added. The aqueous layer was extracted with EtOAc (3×5mL). The combined organics were dried (Na2SO4), filtered, and concentrated. The desired compound was purified by silica gel column chromatography, eluting with EtOAc/hexane.
  • 8
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  • [ 126-33-0 ]
  • [ 79-37-8 ]
  • [ 42518-98-9 ]
YieldReaction ConditionsOperation in experiment
100% at 165℃; for 17.5h; A mixture of oxalyl chloride, 2-chlorothiophene and <strong>[126-33-0]<strong>[126-33-0]sulfolan</strong>e</strong> (3 : 1: 0.33, molar ratio) was heated in a closed vessel to 165 C for 17.5 h. Analysis of the reaction mixture by 1H NMR indicated a conversion of 2-chlorothiophene of 100% and a yield of 5-chlorothiophene-2- carbonyl chloride of 100%.
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  • [ 20277-69-4 ]
  • [ 38695-60-2 ]
  • 10
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  • [ 67-56-1 ]
  • [ 558-13-4 ]
  • [ 35475-03-7 ]
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