REPs: Prop-2-yn-1-yl-4,4-dinitropentanoate (PDNP) and but-3-yn-1-yl-4,4-dinitropentanoate (BDNP) Two types of REPs, PDNP and BDNP, were prepared according to our previous paper (see Scheme 1 for synthetic route) [17]. PDNP (n = 1): Yield 92.4%. 1H NMR (300 MHz,...