A comparison of different esters (1a-e) revealed similar yields and selectivities (88-97%, Z/E: 4.1-4.6, respectively), with an exception for tert-butyl ester (1c), which reacted significantly slower than esters 1a-b and 1d-e. The array of alkyl alkynes (1f-j) demonstrated no significant impact of steric hindrance, affording products in yields ranging from 76% to 95%. The lower yields were typically attributed to incomplete conversion under standard conditions.