Why on erowid People who do IT reaction uses diluted glacial acetic acid ~ about 70-75% for reduction?
And second thing they are uses more acid to reduce nitropropene for 1g p2np they use 10 ml GAA and dilute IT with water.
In synthesis from this topic, for 1g p2np they use 5ml GAA.
Its 50% different for reagent who give Hydrogen in reduction.
What reduction will be better? With water (from erowid) or without water (this topic)?
Text from this link:
#4. Reduction of unsubstituted P2NP by HyperLab Bee #2.
Into a 3-L FBF there was placed 100 mls water, 250mls GAA and a solution of 1g mercury in 2-3 mls conc. HNO3.
52 g (2 packs 10 meters each) of Al foil were folded into 7-8 layers, cut in pieces 3x3 cm and loaded into the flask.
The flask was heated to 40 °C. When the start of amalgamation was clearly visible in several minutes, heating was discontinued and into the reaction there was added a suspension of 30 g
non-recrystallized phenyl-2-nitropropene in a mixture of 50 mls GAA and 100mls IPA (nitropropene was obtained
a la Barium’s MeAm condensation - an important notion since this method gives the product of superior purity).