The synthesis of phenylalanine from benzyl chloride and ammonia using a catalytic system of palladium on carbon is not a common or well-documented reaction. However, I can provide you with a general idea of the conditions that might be suitable for this reaction.1. Temperature: The reaction temperature should be moderate, typically between 50-100C. Higher temperatures may lead to side reactions and decomposition of reactants or products, while lower temperatures may result in slow reaction rates.2. Reactant ratios: A stoichiometric ratio of benzyl chloride to ammonia 1:1 should be used to ensure complete conversion of the reactants. However, an excess of ammonia e.g., 1:2 or 1:3 may be used to drive the reaction to completion and minimize side reactions.3. Catalyst loading: The amount of palladium on carbon catalyst should be optimized to provide a balance between reaction rate and catalyst cost. Typically, a catalyst loading of 1-10 mol% based on benzyl chloride is used for similar reactions.4. Solvent: A suitable solvent should be chosen to dissolve the reactants and provide a homogeneous reaction mixture. Polar aprotic solvents, such as dimethylformamide DMF or dimethyl sulfoxide DMSO , are often used for palladium-catalyzed reactions.5. Reaction time: The reaction time should be optimized to achieve maximum conversion of reactants to phenylalanine. This may vary depending on the specific reaction conditions and catalyst used.Please note that these are general guidelines, and the specific conditions for this reaction may need to be optimized through experimentation.