| abstract |
Disclosed is a process for the preparation of the following compounds: n n n n n n n n n n where R 1 , R 1a and R 2a have the definitions in the description, as well as a process to prepare other intermediates that may be useful to synthesise downstream products, especially compounds that are useful as medicaments, for instance Bruton's tyrosine kinase (Btk) inhibitors such as ibrutinib. Also disclosed are other processes, other intermediates and compounds per se. |