MOP knows that l-pseudo goes to d-meth via the RPIE reaction - is the naming of the l and d arbitary or do things change around during the reaction?
Its not arbitrary, the chrial carbon which the "l-" in l-pseudo refers to is the one that has the -OH group, remove the -OH group and this carbon is no longer chrial. The "d-" in d-meth refers to the carbon that has the nitrogen attached, this carbon is unaffected in the reaction and its orientation is "d-" in pseudoephedrine, ephedrine and d-methamphetamine.
I am unsure if my nomenclature is correct but thats why
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