Efficient Synthesis and Practical Resolution of 1-(Naphthalen-1-yl)ethanamine, a Key Intermediate for Cinacalcet. -A synthesis suitable for large-scale production is given for the hydrochloride salt of (R)-1-(naphthalen-1-yl)ethanamine (V), which is a key intermediate in the synthesis cinacalcet hydrochloride, a drug for the treatment of secondary hyperparathyroidism. -(MATHAD*, V. T.; SHINDE, G. B.; IPPAR, S. S.; NIPHADE, N. C.; PANCHANGAM, R. K.; VANKAWALA, P. J.; Synth. Commun. 41 (2011) 3, 341-346, http://dx.