Abstract
The title compound, C22H22O5, crystallizes with two molecules in the asymmetric unit, one of which shows disorder of its ethyl acetate group over two sets of sites in a 0.880 (2):0.120 (2) ratio. The C[triple-bond]C distances in the two molecules are almost the same [1.1939 (16) and 1.199 (2) Å], but the Csp 3—C[triple-bond]C angles differ somewhat [175.92 (12) and 172.53 (16)°]. In the crystal, several weak C—H...O interactions are seen.
Highlights
The title compound, C22H22O5, crystallizes with two molecules in the asymmetric unit, one of which shows disorder of its ethyl acetate group over two sets of sites in a 0.880 (2):0.120 (2) ratio
The title compound, where the homopropargyl alcohol is masked as a carbonate, might serve as an intermediate in the synthesis of, -unsaturated -lactones The aim of this work is to report the synthesis and crystal structure of the title compound
The bond distances for the sp carbon-atom triple bonds are almost the same [1.1939 (16) for C15 C16 and 1.199 (2) Afor C34 C35] but a greater difference is present between the bond angles of C14—C15 C16 [175.92 (12)] and C33—C34 C35 [172.53 (16)]
Summary
Functionalized homopropagyl alcohols are useful building blocks in organic synthesis (Kim et al, 2017; Foley & Leighton, 2015; Francais et al, 2010; Hosseyni et al, 2016; Gao et al, 2014; Trost & Rhee 2003; Yadav & Maiti, 2002). The title compound, where the homopropargyl alcohol is masked as a carbonate, might serve as an intermediate in the synthesis of , -unsaturated -lactones The aim of this work is to report the synthesis and crystal structure of the title compound. There is disorder in the ethyl ester grouping of the C20 molecule and atoms C35, C36, O6 and C37 and their attached H atoms (if any) were modelled with two sets of sites in a 0.880 (2):0.120 (2) ratio. Several weak C—HÁ Á ÁO interactions occur (Table 1, Fig. 2).
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