33696-03-6

Basic information

• Product Name: 4-chlorophenyl 4-bromobenzoate
• Synonyms: 4-chlorophenyl 4-bromobenzoate
• CAS NO: 33696-03-6
• Molecular Weight: 311.562
• Mol File: 33696-03-6.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 4-chlorophenyl 4-bromobenzoate(CAS DataBase Reference)
• NIST Chemistry Reference: 4-chlorophenyl 4-bromobenzoate(33696-03-6)
• EPA Substance Registry System: 4-chlorophenyl 4-bromobenzoate(33696-03-6)

Safety Data

• Hazardous Substances Data: 33696-03-6(Hazardous Substances Data)

Upstream product

• 586-76-5 4-Bromobenzoic acid 
• 35666-13-8 p-bromobenzoic acid p-nitrophenyl ester 
• 106-48-9 4-chloro-phenol 
• 586-75-4 4-chlorobenzoyl chloride 

Relevant articles and documents

Crystal engineering of hand-twisted helical crystals

A strategy is outlined for the design of hand-twisted helical crystals. The starting point in the exercise is the one-dimensional (1D) plastic crystal, 1,4-dibromobenzene, which is then changed to a 1D elastic crystal, exemplified by 4-bromophenyl 4'-chlorobenzoate, by introduction of a molecular synthon -O-CO-in lieu of the supramolecular synthon Br···Br in the precursor. The 1D elastic crystals are next modified to two-dimensional (2D) elastic crystals, of the type 4-bromophenyl 4'-nitrobenzoate where the halogen bonding and C-H· · ·O hydrogen bonding are well-matched. Finally, varying the interaction strengths in these 2D elastic crystals gives plastic crystals with two pairs of bendable faces but without slip planes. Typical examples are 4-chlorophenyl and 4-bromophenyl 4'-nitrobenzoate. This type of 2D plasticity represents a new type of bendable crystals in which plastic behavior is seen with a fair degree of isotropic character in the crystal packing. The presence of two sets of bendable faces, generally orthogonal to each other, allows for the possibility of hand-twisting of the crystals to give grossly helical morphologies. Accordingly, we propose the name hand-twisted helical crystals for these substances.

Kinetics of the reaction of 4-nitrophenyl benzoates with 4-chlorophenol in the presence of potassium carbonate in dimethylformamide

The effect of the substituent in the benzoyl group on the relative rate and activation parameters of transesterification of substituted 4-nitrophenyl benzoates with 4-chlorophenol in dimethylformamide in the presence of potassium carbonate was studied by the competing reaction technique. The whole series of benzoates showed the enthalpy-entropy compensation effect. 4-Nitrophenyl benzoates having electronacceptor substituents give rise to isokinetic relationship with an isokinetic temperature β of 382 K. The mechanism of the transesterification process is discussed. Pleiades Publishing, Inc., 2006.