GB1240698A - Methylenation process and reagent - Google Patents

Methylenation process and reagent

Info

Publication number
GB1240698A
GB1240698A GB4908168A GB4908168A GB1240698A GB 1240698 A GB1240698 A GB 1240698A GB 4908168 A GB4908168 A GB 4908168A GB 4908168 A GB4908168 A GB 4908168A GB 1240698 A GB1240698 A GB 1240698A
Authority
GB
United Kingdom
Prior art keywords
methylene
reagent
yield
weight
hydroxy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4908168A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD Searle LLC
Original Assignee
GD Searle LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GD Searle LLC filed Critical GD Searle LLC
Priority to US865965A priority Critical patent/US3634469A/en
Publication of GB1240698A publication Critical patent/GB1240698A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F3/00Compounds containing elements of Groups 2 or 12 of the Periodic Table
    • C07F3/06Zinc compounds
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L17/00Apparatus or implements used in manual washing or cleaning of crockery, table-ware, cooking-ware or the like
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J1/00Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Steroid Compounds (AREA)

Abstract

1,240,698. Halo-zinc-methylene reagent; preparation of methylene steroids. G. D. SEARLE & CO. 16 Oct., 1968 [17 Oct., 1967], No. 49081/68. Headings C2J and C2U. A process for the manufacture of a halozinc methylene reagent comprises contacting a zinclead couple with a methylene halide in tetrahydrofuran or an alkylene glycol ether or dialkoxy ether at elevated temperature. Preferably CH 2 Br 2 or CH 2 I 2 and T.H.F. are used. A typical iodozinc methylene tetrahydrofuran reagent crystallized from solution contains 15-25% by weight Zn, 50-65% by weight I and 13-20% by weight C. The reagent may be used to react with a reactive steroidal ketone to produce a methylene steroid. Steroid derivatives which may be used include those of the pregnane, estrane and androstane series. The ketone may be activated by an adjacent hydroxy, acyloxy or oximino function. The ketone group may be in the 3-, 20- or 6-positions. It is stated that 6-methyleneandrostane - 3(#,5α,17# - triol, which may be made from the corresponding 3,17-diacetate formed by this method, may be reacted with CrO 3 to yield the 3,17-dione, hydrogenated using a platinum catalyst to yield the 6α-methyl derivative, and dehydrated with SOCl 2 to yield 6α - methyl androst - 4 - ene - 3,17 - dione, which may then be reduced with NaBH 4 to yield 17#- hydroxy - 6α - methyl androst - 4 - en - 3 - one, a compound having both anabolic and androgenic properties. A number of other methylenesteroid products are also described, and the conversion of 3# - benzyloxy - 5α - hydroxy-6- methylenepregnan - 20 - one 20 - ethylene ketal to the free 20-one, the formation of 6-methylenandrostane - 3#,5α,l7# - triol triacetate from the 3,17-diacetate and the formation of the corresponding tripropionate from the dipropionate.
GB4908168A 1967-10-17 1968-10-16 Methylenation process and reagent Expired GB1240698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US865965A US3634469A (en) 1968-10-16 1969-10-13 Methylenated steroids and process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67578867A 1967-10-17 1967-10-17

Publications (1)

Publication Number Publication Date
GB1240698A true GB1240698A (en) 1971-07-28

Family

ID=24711977

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4908168A Expired GB1240698A (en) 1967-10-17 1968-10-16 Methylenation process and reagent

Country Status (3)

Country Link
DE (1) DE1803276A1 (en)
FR (1) FR1588400A (en)
GB (1) GB1240698A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7137606U (en) 1972-12-21 Roeder W Device for cleaning a collecting rake arranged at the bottom of the inlet to a wastewater treatment plant with a straight rake rear side

Also Published As

Publication number Publication date
DE1803276A1 (en) 1969-06-04
FR1588400A (en) 1970-04-10

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