Careful finetuning of the phosphonium salt and base equivalents significantly improved the yield of the product (1) from 73% to 89% (entries B1 -B6). Additionally, variation in milling frequency showed that a threshold frequency of at least 30 Hz is necessary (entries C2 and C3); at lower frequencies, only minimal product formation was observed, with unreacted starting material being recovered (entry C1). Finally, we established a protocol that excels in ease of reaction setup and rapid reaction times (entry C3).