Original: In 1933, working in ZÃ 1\/4 rich, Switzerland, Reichstein succeeded, independently of Sir Norman Haworth and his collaborators in the United Kingdom, in synthesizing vitamin C (ascorbic acid) in what is now called the Reichstein process.
Simplified: In 1933, working in ZÃ 1\/4 rich, Switzerland, Reichstein made vitamin C (ascorbic acid) in what is now called the Reichstein process.