A common compound: 6940-78-9, name is 1-Bromo-4-chlorobutane, belongs to chlorides-buliding-blocks compound, it can change the direction of chemical reaction, and react with certain compounds to generate new functional products. A new synthetic method of this compound is introduced below. 6940-78-9
A solution of 1-bromo-4-chlorobutane (22.25 ml, 0.19 mol) in diethyl ether (100 ml) was added dropwise (under N2 atmosphere) to a suspension of activated Mg turnings (4.67 g, 0.19 mol) in diethyl ether (100 ml). Some crystals of iodine were also added. The temperature in the flask increased, and the orange colour turned to white. Once the addition of 1-bromo-4-chlorobutane was completed, the reaction was cooled in an ice-bath and 2-naphthalenecarboxaldehyde (20.00 g, 0.13 mol) was added dropwise as a solution in THF (200 ml, dry). The reaction mixture was stirred in the ice-bath for 4 hours. Then the mixture was quenched with NH4Cl 1 N. Both phases were separated. The organic layer was washed with brine, dried (MgSO4), filtered and the solvent was evaporated. The residue was purified by flash chromatography (eluent: n-hexane/EtOAc 20:1). The desired fractions were collected and the solvent was evaporated, yielding intermediate 19.
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 6940-78-9, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; Guillemont, Jerome Emile Georges; Dorange, Ismet; Lancois, David Francis Alain; Villalgordo-Soto, Jose Manuel; Ferdinand, Yvan Rene; Motte, Magali Madeleine Simone; Andries, Koenraad Jozef Lodewijk Marcel; Koul, Anil; US2010/63026; (2010); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics