Synthesis
N-(4-(tert-butyl)-2-chlorophenyl)acetamide was used as starting material, and the acetyl deprotection reaction was carried out by treating with 20% aqueous hydrochloric acid overnight to obtain the target product 4-tert-butyl-2-chloroaniline, which was a reddish oily material with a yield of 75%.
References
[1] Patent: WO2011/120604, 2011, A1. Location in patent: Page/Page column 111; 132
[2] Patent: WO2005/118575, 2005, A1. Location in patent: Page/Page column 79
[3] Journal of Organic Chemistry, 1956, vol. 21, p. 736