The present invention relates with a process for preparing compounds of Formula I:and pharmaceutically acceptable salts thereof, wherein ring A, ring B, W, m, D, R2, R2a, R3, R3a, and Z are as defined herein, and which are inhibitors of Trk kinases and are useful in the treatment of pain, cancer, inflammation, neurodegenerative diseases and certain infectious diseases；intermediates of formula IIused in the preparation of compounds of formula I and the compound for use in the treatment of the diseases mentioned above of the following formula:
