Following his primary studies, Alliali went to the École normale William-Ponty in Sébikotane, Sénégal, before enrolling in the law school at the Université de Grenoble.
However, because defense lawyers were named by decree by the Governor-General of the colonial administration, Alliali had to wait over a year and rely on a favor by his future brother-in-law, Jean Delafosse, to be nominated to the role.
[4] In February 1963, President Félix Houphouët-Boigny named Alliali Deputy Minister of Foreign Affairs,[5] placing him directly under the authority of the Head of State.
[6] In January 1966, Alliali was named Keeper of the Seals and Minister of Justice in Houphouët-Boigny's fourth government, a post he would hold for seventeen years until 1983.
An active member of the Executive Committee of the Parti démocratique de Côte d'Ivoire (PDCI-RDA), Alliali was considered a possible successor to President Félix Houphouët-Boigny, in the early 1980s.