> ...you'll get alpha ethyl n,n diethyltryptamine.
No way. Depending on the molar ration used you get a mixture of primary, secondary, and tertiary tryptamine.
> This compound is about 2/3 the power and potency of DET
alpha-ethylation completely abolishes psychedelic activity (especially for tertiary amines).
N,N,N-trimethyltryptamines can be converted to dimethyltryptamines by reaction with LiAlH
4 or ethanolamine. Or by distillation