Draw mechanism using pyradine as a base in the intial step Draw the mechanism using pydradine as a general base Draw the mechanism using pyradine as a nucleophilic catalyst Draw the mechanism using nucleophilic catalysis and using acetate as a general base H3C ROH ་ ་ CH3 N H3C -R

The key step in a reported laboratory synthesis of sativene, a hydrocarbon isolated from the mold Helminthosporium sativum, involves the following base treatment of a keto tosylate. What kind of reaction is occurring? How would you complete the synthesis?

a. Draw the mechanism for the following reaction if it involves specific-acid catalysis.b. Draw the mechanism if it involves general-acid catalysis.

Draw Intermediate CH3OH₂+ protonation H H3C -0 H Q CH3OH deprotonation loss of H₂O elimination H3C :0 ÖH -CH3 Draw Intermediate CH3OH deprotonatio Please select a drawing or reag

Draw the mechanism for the below reaction H & OH H₂N N O-H H₂O

Provide the major product and indicate which mechanism

Draw a mechanism for the following reactions "NO, NaOH, Н,О heat 1) NaOH 2) NaOH, heat O.

Coumarin, a naturally occurring compound isolated from lavender, sweet clover, and tonka bean, is made in the laboratory from o hydroxybenzaldehyde by the reaction depicted below. Draw a stepwise mechanism for this reaction. Coumarin derivatives are useful synthetic anticoagulants.

Draw a mechanism between these two reactants under using HCl(acidic condition)

Draw a detailed mechanism for the following reaction and include the major product