Was reading British patent 463,936 they say making L.A.is best done through the hydrazine process. Yields are better, the hydrazide is stabler,can start with less pure starting materials. Over all a much better process than aqueous or methanolic alkaline hydrolysis.

Why is it so hard to use proper hyperlink tags? The British country code is GB, the instructions are found in

Post 435595

(Rhodium: "How to write proper Patent/Medline/DOI link tags", Tryptamine Chemistry)

http://www.won-nl.org/codes/patentco.htm