砜
砜的通式
砜（拼音：fēng，注音：ㄈㄥ，粤拼：fung1，音同「風」，英语：sulfone）是含有R-(O=)S(=O)-R'结构的有机化合物统称，R和R'指代有机基团。砜官能团结构也称磺酰基。
砜常由硫醚氧化制取，中间产物为亚砜。例如，二甲基硫醚氧化先得二甲基亚砜，继续氧化则得二甲基砜。
Ramberg-Bäcklund反应和Julia烯烃合成中，砜被转化为烯烃。
常见的砜包括：治疗麻风病的二氨二苯砜（達普頌）和环丁砜等。
参见
- 有机硫化合物
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砜的通式
Schooner
For other uses, see Schooner (disambiguation). A traditional gaff topsail schooner Schooner rigging: 1 ) Bowsprit 2 ) Jib & fore staysail 3 ) Fore gaffsail & topsail 4 ) Main staysail 5 ) Main gaff topsail 6 ) Mainsail 7 ) End of boom A schooner / ˈ s k uː n ər / is a type of sailing vessel with fore-and-aft sails on two or more masts. The most common type has two masts, the foremast being shorter than the main. While the schooner was originally gaff-rigged, modern schooners typically carry a Bermuda rig. Contents 1 Etymology 2 History 3 Usage 4 Schooner sail plan 4.1 Schooner rationale 5 Multi-masted schooners 6 Famous schooners 7 Gallery 8 See also 9 References 10 External links Etymology Traditional square topsail schooner Shenandoah , sailing in Nantucket Sound. The first detailed definition of a schooner, describing the vessel as two-masted vessel with fore and aft gaff-rigged sails appeared in ...
