Synthesis Of P-Di-Tert-Butylbenzene Attained by Using Friedel-Crafts Alkylation

 Synthesis Of P-Di-Tert-Butylbenzene Attained by Using Friedel-Crafts Alkylation Essay


In this test, the synthesis of p-di-tert-butyl benzene was achieved by using the Friedel-crafts Alkylation. How the reasons were or were not achieved

For this research, 0. 02356 grams of p-di-tertbutyl benzene were recovered. The theoretical percent produce was 0. 616 grams of the product. This gives a 38. 2% yield. The merchandise obtained had been small white colored crystals, as expected. The product acquired was operate in the MARCHAR which displays the significant peacks of the functional groups present in the mixture which are C-H (sp3 and sp2) and C=C, representing the carbons in the benzene ring. Likewise, from the MARCHAR there are highs at 834 cm-1 signifies that this system is para-disubstituted. These types of functional groupings indicate the final product is p-di-tert-butyl benzene. Theory in the techniques

The technique used in this experiment was the Friedel-Crafts alkylation reaction, the industry type of electrophilic aromatic substitution. Friedel-Crafts alkylation involves the alkylation of the aromatic ring by an alkyl halide and a solid Lewis chemical p catalyst. From this reaction, t-butyl chloride, the industry tertiary halide, is responded with AlCl3 forming a tertiary carbocation which then reacts with t-butylbenzene forming p-di-t-butylbenzene. T-butylbenzene is known as a type of benzene that contains an initiating group –C(CH3)3; therefore , if the carbocation responds with t-butylbenzene, it is most likely to attach to ortho or afin de position; however , if it is attached with the ortho position, steric hindrance will probably be produced. As a result, the electrophile adds pra to the t-butyl group minimizing steric hindrance and favoring the stability of the product. The substituent donates electron thickness to the benzene ring; yet , the extra electron density delivered into the diamond ring by the substituent is certainly not equally divided over the entire ring, but it really is concentrated inside the ortho and para positions. These positions are the many reactive for the electrophile produced. Tert-butyl...