[monoman]

Hello

I need help in this synthesis problem to form this drug (attached as target molecule).
To synthesise the drug, I have to use the precursor molecule (attached), in addition to any other molecule with four or less than four carbon atoms. I've tried many approaches but no luck so far.

Any help is appreciated! Thank you!

[AWK]

Multiple post!

https://chemrxiv.org/articles/Computer-Assisted_Planning_of_Hydroxychloroquine_s_Syntheses_Commencing_from_Inexpensive_Substrates_and_Bypassing_Patented_Routes_/12026439/1