Kokorinov's surviving architectural legacy, once believed to be substantial,[1] has been reduced by recent research to only two buildings, the Imperial Academy of Arts and Kirill Razumovsky palace in Saint Petersburg.
[2] The Academy was designed by Jean-Baptiste Vallin de la Mothe based on an earlier proposal by Jacques-François Blondel, while Kokorinov managed the construction in its early phases (1764–1772).
Soon Kokorinov was invited into the group of Ivan Korobov, where the young architect gave such a good account of himself that was promoted by the master and in 1749 was awarded the title of apprentice.
[5] He received the degree of Master of Mathematics from Moscow University[6] and in 1754 Kokorinov passed professional examination as a junior architect, joined the staff of Francesco Bartolomeo Rastrelli and relocated to Saint Petersburg where he made contact with count Ivan Shuvalov, founder of Moscow State University (1755) and the Imperial Academy of Arts (1757).
[8] The Academy, a complex structure measuring 140 by 125 meters, bears traces of Blondel's style yet, according to Dmitry Shvidkovsky, "is more up to date ... especially noticeable in plan.
[8] While the architects finalized their proposal, Russia was shaken by a brief reign (5 January 1762 – 9 July 1762) and murder of emperor Peter III, succeeded by Catherine II.