2:31 PM Tue Apr 26 @ 95% 0 + : b. Provide mechanisms and/or products for the following transformations. Pdln, Cul, PhBr 1. HBpin, THE 7 7 EtyN. THE H 2. Pan, PhBr, K3PO4, H,O/THF 3. The Mannich reaction can take many forms, including reactions where aromatic heterocycles are employed. Provide mechanisms for the reactions in the following sequence. Me sem wi Meo OMe MeN- MeN- H: -N MeN- MeCN. 100 C NaH, THF; H then 6M HCI MeOC Me -Me MeOC 4 6 V