Facile synthesis of p-tert-butylthiacalix[4]arene by the reaction of p-tert-butylphenol with elemental sulfur in the presence of a base
β Scribed by Hitoshi Kumagai; Mitsuharu Hasegawa; Setsuko Miyanari; Yoshihiro Sugawa; Yoko Sato; Takashi Hori; Sanae Ueda; Hiroki Kamiyama; Sotaro Miyano
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 144 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
## Abstract __tert__βButylsulfinyl chloride (**1**) reacts smoothly with __N__β²β(di)methylβ and __N__β²β(di)phenylβ__N__βhydroxyurea (**2**) in acetone at room temperature, in the presence of two equivalents of pyridine. An intermediate __Oβtert__βbutylsulfinylβ__N__βhydroxyurea (**3**) is postulate
## Abstract A nonchloric method for the synthesis of phosphorous acid and barium and calcium phosphites is proposed, involving the reaction of elemental phosphorus (P~4~) with aqueous barium and calcium hydroxides in the presence of quaternary ammonium base (choline). Conditions for the preparation