The newly appointed Tottenham boss has accused the Blues' owner of breaking promises when he fired him in March after only nine months in charge at Stamford Bridge
The Portuguese manager arrived at the Blues with a promising reputation built at Porto but failed to gain control of a Chelsea squad including several senior players.
The recently appointed manager at White Hart Lane spoke for the first time about the confrontation with Abramovich after which he was forced out of the club.
"I respect the decision of the owner of Chelsea but I will never accept it," Villas-Boas told The Guardian.
"I told him that for me, it was him quitting on me when he had been so much involved at the beginning in bringing me in [from Porto] and he was also [the one] who was not putting up to the things that he promised.
"What reason did he give to me? I'm not sure if I can make it public but the reasons don't go along or can't be applied to the fact that I was dismissed."
Roberto Di Matteo took over as interim manager following Villas-Boas' departure and went on to win the FA Cup and Champions League and, whilst not taking credit for the successes, Villas-Boas felt he was denied the opportunity to see out what he started but felt the decision to sack him also liberated the players.
"The decision to terminate what was going on at Chelsea was not mine, it was the owner's," he continued.
"It is all very well that you cut the project short and Chelsea go on to win two trophies and [you] say how wonderful the squad was, but at the beginning nobody believed in that squad when we put it together.
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"On the day of my dismissal, I told Roman that eventually, you can win these two trophies because the emotional impact is extremely strong."Villas-Boas also revealed that he felt his professionalism and footballing principles were never properly appreciated in England.
"I am always a person who defends certain principles that were never understood in England and it requires much more adaptability from myself," he said.
"I am a person who always puts the team in front and I do it publicly. I'm not a guy who is able to criticise anyone in public but I am not a guy who promotes individuals in public."